* . *
  • About
  • Advertise
  • Privacy & Policy
  • Contact
Thursday, October 9, 2025
Earth-News
  • Home
  • Business
  • Entertainment
    Israel’s Entertainment Industry Is Being Targeted by the Left in Hollywood and the Right at Home – The Wall Street Journal

    Inside the Fierce Clash Shaping Israel’s Entertainment Industry: Hollywood vs. Local Voices

    Offset Is Ready To Finalize Divorce With Cardi B for a Major Reason – Yahoo

    Offset Poised to Finalize Divorce from Cardi B for a Major Reason

    Beyond the Stage: 8 Performing Arts Centers Driving Entertainment and Education – Livability.com

    Beyond the Stage: 8 Performing Arts Centers Transforming Entertainment and Education

    Row K Entertainment Emerges as Major New Hollywood Buyer With Splashy TIFF Shopping Spree – TheWrap

    Row K Entertainment Emerges as Major New Hollywood Buyer With Splashy TIFF Shopping Spree – TheWrap

    Charlie Hunnam Reflects on Playing a Serial Killer in Monster: The Ed Gein Story – Yahoo

    Charlie Hunnam Reveals the Dark Challenges of Playing a Serial Killer in Monster: The Ed Gein Story

    “Reba” cast, then and now: See the stars 24 years later (and who’s reunited for another show) – Yahoo

    “Reba” cast, then and now: See the stars 24 years later (and who’s reunited for another show) – Yahoo

  • General
  • Health
  • News

    Cracking the Code: Why China’s Economic Challenges Aren’t Shaking Markets, Unlike America’s” – Bloomberg

    Trump’s Narrow Window to Spread the Truth About Harris

    Trump’s Narrow Window to Spread the Truth About Harris

    Israel-Gaza war live updates: Hamas leader Ismail Haniyeh assassinated in Iran, group says

    Israel-Gaza war live updates: Hamas leader Ismail Haniyeh assassinated in Iran, group says

    PAP Boss to Niger Delta Youths, Stay Away from the Protest

    PAP Boss to Niger Delta Youths, Stay Away from the Protest

    Court Restricts Protests In Lagos To Freedom, Peace Park

    Court Restricts Protests In Lagos To Freedom, Peace Park

    Fans React to Jazz Jennings’ Inspiring Weight Loss Journey

    Fans React to Jazz Jennings’ Inspiring Weight Loss Journey

    Trending Tags

    • Trump Inauguration
    • United Stated
    • White House
    • Market Stories
    • Election Results
  • Science
  • Sports
  • Technology
    ENERCON and Biome collaborate for wind turbine noise reduction technology – Yahoo Finance

    ENERCON and Biome Join Forces to Revolutionize Wind Turbine Noise Reduction

    US and investors gambling on unproven nuclear technology, warn experts – Financial Times

    US and investors gambling on unproven nuclear technology, warn experts – Financial Times

    Is Light-Speed Analog Computing the Future of Technology? – BIOENGINEER.ORG

    Could Light-Speed Analog Computing Transform the Future of Technology?

    ARM Institute opens technology project call to speed submarine manufacturing – The Robot Report

    ARM Institute Unveils Cutting-Edge Technology Project to Revolutionize Submarine Manufacturing

    Forget Cowbells. Cows Wear High-Tech Collars Now. – The New York Times

    Ditch the Cowbells: Discover the High-Tech Collars Transforming Cattle Care

    What the Recent Price Surge Means for Figure Technology Solutions After SEC Settlement – Yahoo Finance

    What the Recent Price Surge Reveals About Figure Technology Solutions Following SEC Settlement

    Trending Tags

    • Nintendo Switch
    • CES 2017
    • Playstation 4 Pro
    • Mark Zuckerberg
No Result
View All Result
  • Home
  • Business
  • Entertainment
    Israel’s Entertainment Industry Is Being Targeted by the Left in Hollywood and the Right at Home – The Wall Street Journal

    Inside the Fierce Clash Shaping Israel’s Entertainment Industry: Hollywood vs. Local Voices

    Offset Is Ready To Finalize Divorce With Cardi B for a Major Reason – Yahoo

    Offset Poised to Finalize Divorce from Cardi B for a Major Reason

    Beyond the Stage: 8 Performing Arts Centers Driving Entertainment and Education – Livability.com

    Beyond the Stage: 8 Performing Arts Centers Transforming Entertainment and Education

    Row K Entertainment Emerges as Major New Hollywood Buyer With Splashy TIFF Shopping Spree – TheWrap

    Row K Entertainment Emerges as Major New Hollywood Buyer With Splashy TIFF Shopping Spree – TheWrap

    Charlie Hunnam Reflects on Playing a Serial Killer in Monster: The Ed Gein Story – Yahoo

    Charlie Hunnam Reveals the Dark Challenges of Playing a Serial Killer in Monster: The Ed Gein Story

    “Reba” cast, then and now: See the stars 24 years later (and who’s reunited for another show) – Yahoo

    “Reba” cast, then and now: See the stars 24 years later (and who’s reunited for another show) – Yahoo

  • General
  • Health
  • News

    Cracking the Code: Why China’s Economic Challenges Aren’t Shaking Markets, Unlike America’s” – Bloomberg

    Trump’s Narrow Window to Spread the Truth About Harris

    Trump’s Narrow Window to Spread the Truth About Harris

    Israel-Gaza war live updates: Hamas leader Ismail Haniyeh assassinated in Iran, group says

    Israel-Gaza war live updates: Hamas leader Ismail Haniyeh assassinated in Iran, group says

    PAP Boss to Niger Delta Youths, Stay Away from the Protest

    PAP Boss to Niger Delta Youths, Stay Away from the Protest

    Court Restricts Protests In Lagos To Freedom, Peace Park

    Court Restricts Protests In Lagos To Freedom, Peace Park

    Fans React to Jazz Jennings’ Inspiring Weight Loss Journey

    Fans React to Jazz Jennings’ Inspiring Weight Loss Journey

    Trending Tags

    • Trump Inauguration
    • United Stated
    • White House
    • Market Stories
    • Election Results
  • Science
  • Sports
  • Technology
    ENERCON and Biome collaborate for wind turbine noise reduction technology – Yahoo Finance

    ENERCON and Biome Join Forces to Revolutionize Wind Turbine Noise Reduction

    US and investors gambling on unproven nuclear technology, warn experts – Financial Times

    US and investors gambling on unproven nuclear technology, warn experts – Financial Times

    Is Light-Speed Analog Computing the Future of Technology? – BIOENGINEER.ORG

    Could Light-Speed Analog Computing Transform the Future of Technology?

    ARM Institute opens technology project call to speed submarine manufacturing – The Robot Report

    ARM Institute Unveils Cutting-Edge Technology Project to Revolutionize Submarine Manufacturing

    Forget Cowbells. Cows Wear High-Tech Collars Now. – The New York Times

    Ditch the Cowbells: Discover the High-Tech Collars Transforming Cattle Care

    What the Recent Price Surge Means for Figure Technology Solutions After SEC Settlement – Yahoo Finance

    What the Recent Price Surge Reveals About Figure Technology Solutions Following SEC Settlement

    Trending Tags

    • Nintendo Switch
    • CES 2017
    • Playstation 4 Pro
    • Mark Zuckerberg
No Result
View All Result
Earth-News
No Result
View All Result
Home Science

Dipole-dipole interactions: Observing a new clock systematic shift

January 28, 2024
in Science
Dipole-dipole interactions: Observing a new clock systematic shift
Share on FacebookShare on Twitter

Dipole-Dipole Interactions: Observing A New Clock Systematic Shift

Atomic dipoles on a lattice interact to produce an observable spatially varying frequency shift (shown as blue to red). Credit: Steven Burrows/Ye Group

In a new study published in Science today, JILA and NIST (National Institute of Standards and Technology) Fellow Jun Ye and his research team have taken a significant step in understanding the intricate and collective light-atom interactions within atomic clocks, the most precise clocks in the universe.

Using a cubic lattice, the researchers measured specific energy shifts within the array of strontium-87 atoms due to dipole-dipole interactions. With a high density of atoms, these mHz-level frequency shifts—known as cooperative Lamb shifts—were spectroscopically studied. These shifts were studied spatially and compared with calculated values using imaging spectroscopy techniques developed in this experiment.

These cooperative Lamb shifts, named because the presence of many identical atoms in a tightly confining space modifies the electromagnetic mode structure around them, are an important factor as the numbers of atoms in clocks continue to grow.

“If you can understand and control these interactions at high density in this grid, you can always make the grid bigger and bigger,” explains JILA graduate student William Milner, the paper’s second author. “It’s an inherently scalable technology, important for improving clock performance.”

Time in a cube

Atomic clocks, long regarded as the pinnacle of precision, operate on the principle of measuring the frequency of light absorbed or emitted by atoms. Each tick of these clocks is governed by the oscillations of the quantum superposition of electrons within these atoms, stimulated by the corresponding energy from a probing laser. The laser excites the atoms into a quantum state known as the clock state.

While more traditional optical lattice clocks use a one-dimensional optical lattice, suppressing the atoms’ movements only along one strongly confining direction, the strontium quantum gas clock used in this study confined the atoms in all directions by placing them in a cubic arrangement. While using a 3D lattice is an attractive clock geometry, it also requires preparing an ultracold quantum gas of atoms and carefully loading them into the lattice.

“It’s more complicated, but it has some unique benefits as the system features more quantum properties,” Milner elaborates.

In quantum physics, the spatial arrangement of particles critically influences their behavior. With its uniformity and equilibrium, the cubic lattice created a controlled environment where atomic interactions were observable and manipulable with unprecedented precision.

Watching dipole-dipole interactions

Using the cubic lattice, Ross Hutson (a recent JILA Ph.D.graduate), Milner, and the other researchers in the Ye lab, were able to facilitate and measure the dipole-dipole interactions between the strontium atoms. These shifts, normally so small they are neglected, arise from collective interference between the atoms behaving as dipoles when they are prepared in a superposition of the two clock states.

Because the spatial ordering of the atoms within the cubic lattice influences the dipolar coupling, researchers could amplify or diminish the dipole interactions by manipulating the angle of the clock laser relative to the lattice. Operating at a special angle—the Bragg angle—the researchers expected strong constructive interference and observed a correspondingly larger frequency shift.

Looking at cooperative lamb shifts

With stronger dipole-dipole interactions occurring within the lattice, the researchers found that these interactions created local energy shifts throughout the clock system.

These energy shifts, or cooperative Lamb shifts, are very small effects that are normally hard to detect. When many atoms are grouped, such as in a cubic clock lattice, these shifts become a collective affair and are revealed by the newly achieved clock measurement precision. Left uncontrolled, they can affect the accuracy of atomic clocks.

“These [shifts were] initially proposed back in 2004 as a futuristic thing to worry about [for clock accuracy],” adds Milner. “Now, they’re suddenly more relevant [as you add more atoms to the lattice].”

As if measuring these shifts wasn’t interesting enough, even more interesting was that the researchers saw that the cooperative Lamb shifts weren’t uniform across the lattice, but varied depending on each atom’s specific location.

This local variation is significant for clock measurement: it implies that the frequency at which atoms oscillate, and hence the clock’s ‘ticking,’ could slightly differ from one part of the lattice to another. Such spatial dependence of the cooperative Lamb shifts is an important systematic shift to understand as researchers strive to improve timekeeping precision.

“By measuring these shifts and seeing them align with our predicted values, we can calibrate the clock to be more accurate,” Milner says.

From their measurements, the team realized there was a close connection between the cooperative Lamb shifts and the propagation direction of the clock probe laser within the lattice. This relationship allowed them to find a specific angle where a “zero crossing” was observed and the sign of the frequency shift transitioned from positive to negative.

“It’s a particular quantum state that experiences zero collective Lamb shift (equal superposition of ground state and excited state),” explains JILA graduate student Lingfeng Yan. Playing around with the connection between the laser propagation angle with respect to the cubic lattice and the cooperative Lamb shifts has allowed the researchers to fine-tune the clock further to be more robust against these energy shifts.

Exploring other physics

Beyond controlling and minimizing these dipole-dipole interactions in the cubic lattice, the JILA researchers hope to use these interactions to explore many-body physics in their clock system.

“There’s some really interesting physics going on because you have these interacting dipoles,” Milner elaborates, “So people, such as Ross Hutson, have ideas for even potentially using these dipole-dipole interactions for spin squeezing [a type of quantum entanglement] to make even better clocks.”

More information:
Ross B. Hutson et al, Observation of millihertz-level cooperative Lamb shifts in an optical atomic clock, Science (2024). DOI: 10.1126/science.adh4477

Citation:
Dipole-dipole interactions: Observing a new clock systematic shift (2024, January 27)
retrieved 27 January 2024
from https://phys.org/news/2024-01-dipole-interactions-clock-systematic-shift.html

This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no
part may be reproduced without the written permission. The content is provided for information purposes only.

>>> Read full article>>>
Copyright for syndicated content belongs to the linked Source : Phys.org – https://phys.org/news/2024-01-dipole-interactions-clock-systematic-shift.html

Tags: Dipole-dipoleInteractionsscience
Previous Post

Carpal Tunnel Still Impacts Millions – Here’s How You Can Manage It

Next Post

Study predicts best times for Curiosity to sample Mars’ methane

IRONMAN World Championship Kona 2025: Date, start time and how to watch live – TRI247

IRONMAN World Championship Kona 2025: Date, start time and how to watch live – TRI247

October 9, 2025
Canada’s economy is in serious trouble. Now Mark Carney is coming to Washington to talk tariffs – CNN

Canada’s economy is in serious trouble. Now Mark Carney is coming to Washington to talk tariffs – CNN

October 9, 2025
Israel’s Entertainment Industry Is Being Targeted by the Left in Hollywood and the Right at Home – The Wall Street Journal

Inside the Fierce Clash Shaping Israel’s Entertainment Industry: Hollywood vs. Local Voices

October 9, 2025
Better Food, Better Health: Redefining Chronic Disease Care Through Nutrition – The American Journal of Managed Care® (AJMC®)

Better Food, Better Health: Redefining Chronic Disease Care Through Nutrition – The American Journal of Managed Care® (AJMC®)

October 9, 2025
WATCH: ‘Come and get me,’ Pritzker responds to Trump’s call to put Illinois governor in jail – PBS

WATCH: ‘Come and get me,’ Pritzker responds to Trump’s call to put Illinois governor in jail – PBS

October 9, 2025
New Method to Monitor Wild Reindeer Populations Could Boost Conservation Efforts – Bioengineer.org

New Method to Monitor Wild Reindeer Populations Could Boost Conservation Efforts – Bioengineer.org

October 8, 2025
Scientists just proved the moai could walk, solving a 500-year mystery – ScienceDaily

Scientists Finally Reveal How the Moai Statues Could “Walk,” Solving a 500-Year Mystery

October 8, 2025
GenoPalate Advances Its Science Again With Diet Snapshot – Yahoo Finance

GenoPalate Advances Its Science Again With Diet Snapshot – Yahoo Finance

October 8, 2025
Horses making the rounds at Florida hospitals – The Union Democrat

Horses Bringing Joy and Healing to Florida Hospitals

October 8, 2025
ENERCON and Biome collaborate for wind turbine noise reduction technology – Yahoo Finance

ENERCON and Biome Join Forces to Revolutionize Wind Turbine Noise Reduction

October 8, 2025

Categories

Archives

October 2025
M T W T F S S
 12345
6789101112
13141516171819
20212223242526
2728293031  
« Sep    
Earth-News.info

The Earth News is an independent English-language daily published Website from all around the World News

Browse by Category

  • Business (20,132)
  • Ecology (858)
  • Economy (879)
  • Entertainment (21,752)
  • General (17,490)
  • Health (9,921)
  • Lifestyle (891)
  • News (22,149)
  • People (880)
  • Politics (890)
  • Science (16,089)
  • Sports (21,379)
  • Technology (15,859)
  • World (862)

Recent News

IRONMAN World Championship Kona 2025: Date, start time and how to watch live – TRI247

IRONMAN World Championship Kona 2025: Date, start time and how to watch live – TRI247

October 9, 2025
Canada’s economy is in serious trouble. Now Mark Carney is coming to Washington to talk tariffs – CNN

Canada’s economy is in serious trouble. Now Mark Carney is coming to Washington to talk tariffs – CNN

October 9, 2025
  • About
  • Advertise
  • Privacy & Policy
  • Contact

© 2023 earth-news.info

No Result
View All Result

© 2023 earth-news.info

No Result
View All Result

© 2023 earth-news.info

Go to mobile version