Quantum Control of the Hyperfine Spin of a Cs Atom Ensemble

Journal Article · Fri Oct 19 00:00:00 EDT 2007 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.99.163002· OSTI ID:21024320

Chaudhury, Souma; Herr, Tobias; Jessen, Poul S ^[1]; Merkel, Seth; Silberfarb, Andrew; Deutsch, Ivan H ^[2]

---

1. College of Optical Sciences, University of Arizona, Tucson, Arizona 85721 (United States)
2. Department of Physics and Astronomy, University of New Mexico, Albuquerque, New Mexico 87131 (United States)

We demonstrate quantum control of a large spin angular momentum associated with the F=3 hyperfine ground state of {sup 133}Cs. Time-dependent magnetic fields and a static tensor light shift are used to implement near-optimal controls and map a fiducial state to a broad range of target states, with yields in the range 0.8-0.9. Squeezed states are produced also by an adiabatic scheme that is more robust against errors. Universal control facilitates the encoding and manipulation of qubits and qudits in atomic ground states and may lead to the improvement of some precision measurements.

• OSTI ID: 21024320
• Journal Information: Physical Review Letters, Vol. 99, Issue 16; Other Information: DOI: 10.1103/PhysRevLett.99.163002; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
CESIUM 133
EXCITED STATES
GROUND STATES
HYPERFINE STRUCTURE
INFORMATION THEORY
MAGNETIC FIELDS
OPTIMAL CONTROL
QUANTUM MECHANICS
QUBITS
SPIN
TIME DEPENDENCE