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Updated: Aug 14, 2026
06:42
Generation and Coherent Control of Pulsed Quantum Frequency Combs
Published on: June 8, 2018
Vortex phase qubit: generating arbitrary, counterrotating, coherent superpositions in Bose-Einstein condensates via
Kishore T Kapale1, Jonathan P Dowling
1Quantum Computing Technologies Group, Jet Propulsion Laboratory, California Institute of Technology, Mail Stop 126-347, Pasadena, California 91109-8099, USA. Kishor.T.Kapale@jpl.nasa.gov
Physical Review Letters
|December 31, 2005
Summary
Scientists created arbitrary vortex-antivortex pairs in Bose-Einstein condensates (BEC) using light
Area of Science:
- Quantum physics
- Atomic, molecular, and optical physics
Background:
- Bose-Einstein condensates (BEC) exhibit quantum phenomena.
- Vortex states in BEC are crucial for quantum information.
- Orbital-angular-momentum states of light offer new control methods.
Purpose of the Study:
- To propose a novel scheme for generating arbitrary coherent superpositions of vortex states in BEC.
- To utilize orbital-angular-momentum states of light for this purpose.
- To create a vortex-antivortex pair superposition in BEC.
Main Methods:
- Devised a scheme using counterrotating optical vortex states.
- Employed well-established experimental techniques.
- Utilized a specially designed Raman scheme to transfer the optical state onto a BEC.
Main Results:
- Successfully generated arbitrary coherent superpositions of vortex and antivortex pairs in BEC.
- Demonstrated the transfer of an optical vortex-superposition state onto an initially nonrotating BEC.
- The created superposition is both arbitrary and coherent.
Conclusions:
- The proposed scheme enables precise control over vortex states in BEC.
- Potential applications include generating entangled vortex states and quantum memories.
- The technique could advance quantum information processing and inertial sensing.
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