The purpose of this experiment is to make a precision measurement of the electic dipole moment (EDM) of the electron. Because a finite electron EDM violates time symmetry, and thus by the CPT theorem violates CP symmetry as well, a precision upper bound on an electron EDM constrains modelbuilders. In this experiment we use trapped HfF+ molecular ions and use the intermolecular electric field to greatly enhance a potential electron EDM signal.
We're Hiring!
We are looking for a postdoc to join the eEDM group led by Eric Cornell and Jun Ye in Boulder, Colorado. If interested, please email your name, CV, and email addresses of possible references to cornell@jila.colorado.edu. Or if you know a colleague who may be interested, please let them know about the opening!
See the Jobs Page.
About the Cornell Group
We work in the field of experimental Atomic, Molecular and Optical Physics. One major effort involves leveraging the techniques of precision metrology to look for evidence of new particle physics. A second effort makes use of ultralow temperature atomic gases to explore few- and many-body quantum physics.
Research Areas
Stories About Our Research
Sizing Up an Electron’s Shape
Some of the biggest questions about our universe may be solved by scientists using its tiniest particles. Since the 1960s, physicists have been looking at particle interactions to understand an observed imbalance of matter and…
Read MoreWiggles in Time: The Search for Dark Matter Continues
In a new paper published in Physical Review Letters, JILA and NIST Fellows Eric Cornell, Jun Ye, and Konrad Lehnert developed a method for measuring a potential dark matter candidate, known as an axion-like particle. Axion-like…
Read MoreHow universal is universality?
New research from the Cornell Group suggests that the van der Waals universality may have limitations.
Read More
And, The Answer Is . . . Still Round
Why are we here? This is an age-old philosophical question. However, physicists like Will Cairncross, Dan Gresh and their advisors Eric Cornell and Jun Ye actually want to figure out out why people like us exist at all. If there had…
Read MoreIt’s Triplets!
Newly minted JILA Ph.D. Catherine Klauss and her colleagues in the Jin and Cornell group decided to see what would happen to a Bose-Einstein condensate of Rubidium-85 (85Rb) atoms if they suddenly threw the whole experiment…
Read MoreAll Dressed Up and Ready to Probe
Newly minted Ph.D. Ming-Guang Hu and his colleagues in the Jin and Cornell groups recently investigated immersing an impurity in a quantum bath consisting of a Bose-Einstein condensate, or BEC. The researchers expected the strong…
Read More
From BEC to Breathing Forever
It took Eric Cornell three years to build JILA’s first Top Trap with his own two hands in the lab. The innovative trap relied primarily on magnetic fields and gravity to trap ultracold atoms. In 1995, Cornell and his colleagues used the…
Read MorePuff the Magic Atoms
The Cornell and Jin groups have just met the challenge of creating and studying an extremely strongly interacting Bose-Einstein condensate (BEC). This feat was reported in Nature Physics online January 12, 2014. An…
Read MoreThe Dipolar Express
Physicists wonder about some pretty strange things. For instance, one burning question is: How round is the electron? While the simplest picture of the electron is a perfect sphere, it is possible that it is instead shaped like an egg.…
Read More
Close Encounters with the Contact
The Jin and Cornell groups have discovered irrefutable evidence for the contact. The contact appears in ultracold gases under conditions when the atoms are close “contact” in a Bose-Einstein condensate, or BEC. Like pressure,…
Read MoreSharing the Adventure of Science
Graduate students or research associates at JILA have the option of signing up to help teach after-school science classes to elementary and middle school students in the St. Vrain School District. The volunteers expect to stimulate the…
Read MoreCanned Heat
A while back, Fellow Eric Cornell started thinking about all the waste heat produced by the use of water to cool refi neries and other industrial plants. In a few places, the waste hot water — at ~212°F — is used to heat commercial and…
Read More
Buried Treasure
The Anderson and Cornell groups have adapted two statistical techniques used in astronomical data processing to the analysis of images of ultracold atom gases. Image analysis is necessary for obtaining quantitative information about the…
Read MoreThe Oldest Trick in the Book
The mission to find the electron electric dipole moment (eEDM) recently took a menacing turn. Chief Eric Cornell and his protégés were already hard at work characterizing the hafnium fluoride ion (HfF+). Their goal was to be…
Read MoreBragging Rites
What happens to a Bose-Einstein condensate (BEC) when its atoms interact strongly? One possibility for large attractive interactions is that the condensate shrinks and then explodes, as the Cornell and Wieman groups discovered in 2001…
Read More
A Failure to Communicate
In the quantum world inside Fellow Eric Cornell’s lab, communication occurs across a two-dimensional lattice array of Bose-Einstein condensates (BECs) when atoms tunnel out of superatoms (made from about 7000 garden-variety rubidium (Rb…
Read MoreWarm Side of the Force
Small changes in the quantum fluctuations of free space are responsible for a variety of curious phenomena: a gecko’s ability to walk across ceilings, the evaporation of black holes via Hawking radiation, and the fact that warmer…
Read MoreRunning Backwards
Does the electron have an electric dipole moment (eEDM)? If it does, the standard model of elementary particle physics says this dipole moment is many orders of magnitude below what can be measured experimentally. As Fellow John Bohn…
Read More
Measure the Force, Luke
Graduate students Dave Harber and John Obrecht, postdoc Jeff McGuirk, and Fellow Eric Cornell recently devised a clever way to use a Bose-Einstein condensate (BEC) inside a magnetic trap to probe the quantum behavior of free space. To…
Read More
Research Highlights
Sizing Up an Electron’s Shape
Some of the biggest questions about our universe may be solved by scientists using its tiniest particles. Since the 1960s, physicists have been looking at particle interactions to understand an observed imbalance of matter and…
Read More
Wiggles in Time: The Search for Dark Matter Continues
In a new paper published in Physical Review Letters, JILA and NIST Fellows Eric Cornell, Jun Ye, and Konrad Lehnert developed a method for measuring a potential dark matter candidate, known as an axion-like particle. Axion-like…
Read More
How universal is universality?
New research from the Cornell Group suggests that the van der Waals universality may have limitations.
Read More
And, The Answer Is . . . Still Round
Why are we here? This is an age-old philosophical question. However, physicists like Will Cairncross, Dan Gresh and their advisors Eric Cornell and Jun Ye actually want to figure out out why people like us exist at all. If there had…
Read More
It’s Triplets!
Newly minted JILA Ph.D. Catherine Klauss and her colleagues in the Jin and Cornell group decided to see what would happen to a Bose-Einstein condensate of Rubidium-85 (85Rb) atoms if they suddenly threw the whole experiment…
Read More
All Dressed Up and Ready to Probe
Newly minted Ph.D. Ming-Guang Hu and his colleagues in the Jin and Cornell groups recently investigated immersing an impurity in a quantum bath consisting of a Bose-Einstein condensate, or BEC. The researchers expected the strong…
Read More
From BEC to Breathing Forever
It took Eric Cornell three years to build JILA’s first Top Trap with his own two hands in the lab. The innovative trap relied primarily on magnetic fields and gravity to trap ultracold atoms. In 1995, Cornell and his colleagues used the…
Read More
Puff the Magic Atoms
The Cornell and Jin groups have just met the challenge of creating and studying an extremely strongly interacting Bose-Einstein condensate (BEC). This feat was reported in Nature Physics online January 12, 2014. An…
Read More
The Dipolar Express
Physicists wonder about some pretty strange things. For instance, one burning question is: How round is the electron? While the simplest picture of the electron is a perfect sphere, it is possible that it is instead shaped like an egg.…
Read More
Close Encounters with the Contact
The Jin and Cornell groups have discovered irrefutable evidence for the contact. The contact appears in ultracold gases under conditions when the atoms are close “contact” in a Bose-Einstein condensate, or BEC. Like pressure,…
Read More
Sharing the Adventure of Science
Graduate students or research associates at JILA have the option of signing up to help teach after-school science classes to elementary and middle school students in the St. Vrain School District. The volunteers expect to stimulate the…
Read More
Canned Heat
A while back, Fellow Eric Cornell started thinking about all the waste heat produced by the use of water to cool refi neries and other industrial plants. In a few places, the waste hot water — at ~212°F — is used to heat commercial and…
Read More
Buried Treasure
The Anderson and Cornell groups have adapted two statistical techniques used in astronomical data processing to the analysis of images of ultracold atom gases. Image analysis is necessary for obtaining quantitative information about the…
Read More
The Oldest Trick in the Book
The mission to find the electron electric dipole moment (eEDM) recently took a menacing turn. Chief Eric Cornell and his protégés were already hard at work characterizing the hafnium fluoride ion (HfF+). Their goal was to be…
Read More
Bragging Rites
What happens to a Bose-Einstein condensate (BEC) when its atoms interact strongly? One possibility for large attractive interactions is that the condensate shrinks and then explodes, as the Cornell and Wieman groups discovered in 2001…
Read More
A Failure to Communicate
In the quantum world inside Fellow Eric Cornell’s lab, communication occurs across a two-dimensional lattice array of Bose-Einstein condensates (BECs) when atoms tunnel out of superatoms (made from about 7000 garden-variety rubidium (Rb…
Read More
Warm Side of the Force
Small changes in the quantum fluctuations of free space are responsible for a variety of curious phenomena: a gecko’s ability to walk across ceilings, the evaporation of black holes via Hawking radiation, and the fact that warmer…
Read More
Running Backwards
Does the electron have an electric dipole moment (eEDM)? If it does, the standard model of elementary particle physics says this dipole moment is many orders of magnitude below what can be measured experimentally. As Fellow John Bohn…
Read More
Measure the Force, Luke
Graduate students Dave Harber and John Obrecht, postdoc Jeff McGuirk, and Fellow Eric Cornell recently devised a clever way to use a Bose-Einstein condensate (BEC) inside a magnetic trap to probe the quantum behavior of free space. To…
Read More
In the Spotlight
: JILA Launches Innovative Research Professional Development Program
Read More
JILA has officially launched its new Research Professional Development Program, an initiative designed to provide graduate students and postdoctoral researchers with comprehensive skills beyond their core scientific training. Focusing on leadership, mentorship, big-picture thinking, and equity in research environments, this program aims to equip participants with the tools they need to become successful scientific leaders.
Read More
: JILA Fellow and University of Colorado Boulder Physics professor John Bohn and JILA and NIST Fellow and University of Colorado Boulder Physics Professor Eric Cornell are awarded 2024 Physics Department Teaching Awards
Read More
JILA and the University of Colorado Boulder's Department of Physics proudly announce two 2024 Physics Department Teaching Award recipients: JILA Fellow and NIST Fellow and Professor Eric Cornell and JILA Fellow and Professor John Bohn. These awards recognize their exceptional dedication to teaching and their profound impact on students at different levels of their academic journey.
Read More
: JILA’s Physics Frontiers (PFC) is Awarded a $25 Million Grant by the National Science Foundation (NSF)
Read More
The JILA Physics Frontiers Center (PFC), an NSF-funded science center within JILA (a world-leading physics research institute), has recently been awarded a $25 million grant after a re-competition process.
This science center brings together 20 researchers across JILA to collaborate to realize precise measurements and cutting-edge manipulations to harness increasingly complex quantum systems. Since its establishment in 2006, the JILA PFC’s dedication to advancing quantum research and educating the next generation of scientists has helped it to stand out as the heart of JILA’s excellence.
Read More
: JILA and NIST Fellows Jun Ye's and Eric Cornell's eEDM Research Highlighted in "Physics World"
Read More
JILA and NIST Fellows Jun Ye and Eric Cornell's recent research on advancing electron electric dipole moment (eEDM) measurements has been highlighted in Physics World.
Read More
JILA Address
We are located at JILA: A joint institute of NIST and the University of Colorado Boulder.
Map | JILA Phone: 303-492-7789 | Address: 440 UCB, Boulder, CO 80309