Bulletin of the American Physical Society
APS April Meeting 2019
Volume 64, Number 3
Saturday–Tuesday, April 13–16, 2019; Denver, Colorado
Session C03: Quantum Information Science
1:30 PM–3:18 PM,
Saturday, April 13, 2019
Sheraton
Room: Plaza E
Sponsoring
Units:
DPF DPB
Chair: Marcel Demarteau, Argonne Lab
Abstract: C03.00002 : Accelerating the search for axionic dark matter with quantum information technology*
2:06 PM–2:42 PM
Presenter:
Konrad W Lehnert
(University of Colorado, Boulder, NIST)
Authors:
Konrad W Lehnert
(University of Colorado, Boulder, NIST)
Maxime Malnou
(University of Colorado, Boulder, NIST)
Daniel A Palken
(University of Colorado, Boulder)
Collaboration:
HAYSTAC
Several hypothetical origins for dark matter, including the QCD axion, posit the existence of feeble but ever-present source terms in Maxwell’s equations. Because these terms would oscillate at an unknown frequency, searches for this type of dark matter scan a tunable resonant cavity, with spectrally narrow sensitivity, through frequency looking for excess electrical energy in the cavity. Quantum noise now limits the rate at which frequency space can be searched, and for the QCD axion the time required to falsify the benchmark theory is prohibitively long. I will describe how the quantum-limited search rate can be accelerated using technology emerging from the effort to create quantum computers. In particular, I will describe how quantum squeezing of microwave fields increases the bandwidth of the resonant cavities without diminishing their sensitivity.
*This work was supported by the National Science Foundation, under grants PHY1607223 and PHY-1734006, and by the Heising-Simons Foundation under grant 2014-183.
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