Quantum sensing and computing using cascaded phases
AssigneeThe Regents of the University of Colorado
InventorsJuliet Gopinath, Lior Cohen, Gregory Krueper
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Abstract
A system for sensing phase changes in a medium includes a bidirectional interferometer having a reference arm and a sensing arm, two inputs at each of the two ends of the interferometer, and a circulator disposed between each input and the interferometer. Sources provide squeezed state pulses at an input at each end of the interferometer. Spaced-apart partial reflectors are disposed along the arms. There are detectors associated with each input. The circulators pass the squeezed state pulses into the interferometer and route reflections of the pulses to the detectors. Classical pulses may provided at the other input at each end of the interferometer.
Claims19
A system for sensing phase changes in a medium comprising:
- a bidirectional interferometer having—
- a reference arm and a sensing arm,
- two inputs at each of two ends of the interferometer, and
- a circulator disposed between each input and the interferometer;
- and
- sources for providing squeezed light pulses at a first input at each of the two ends of the interferometer;
- spaced-apart partial reflectors disposed between the two sources along the arms;
- and
- detectors associated with each input;
- wherein circulators pass the squeezed light pulses from the sources to the interferometer and route reflections of pulses to the detectors.
A system for sensing phase changes in a medium comprising:
- an interferometer having—
- a reference arm and a sensing arm,
- a first input at a first end of one of either the reference arm or the sensing arm of the interferometer,
- a second input at a first end of the other of either the reference arm or the sensing arm of the interferometer,
- a mirror at the second end of the reference arm and at the second end of the sensing arm, and
- a circulator disposed between each input and the interferometer;
- and
- a source for providing squeezed light pulses at the first input;
- a source for providing laser pulses at the second input;
- spaced-apart partial reflectors disposed between the inputs and the mirror along the reference arm and the sensing arm;
- and
- detectors associated with each input;
- wherein circulators pass squeezed light pulses and laser pulses into the interferometer, and route reflections of pulses to the detectors.
Dependencies are inferred from the claim text.