Dynamical generation of phase-squeezed states in two-component Bose-Einstein condensates

Journal Article · Wed Dec 15 00:00:00 EST 2010 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.82.063622· OSTI ID:21528945

Jin, G R; An, Y; Yan, T; Lu, Z S ^[1]

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1. Department of Physics, Beijing Jiaotong University, Beijing 100044 (China)

As an ''input'' state of a linear (Mach-Zehnder or Ramsey) interferometer, the phase-squeezed state proposed by Berry and Wiseman exhibits the best sensitivity approaching to the Heisenberg limit [Phys. Rev. Lett. 85, 5098 (2000)]. Similar with the Berry and Wiseman's state, we find that two kinds of phase-squeezed states can be generated dynamically with atomic Bose-Einstein condensates confined in a symmetric double-well potential, which shows squeezing along spin operator S{sub y} and antisqueezing along S{sub z}, leading to subshot-noise phase estimation.

• OSTI ID: 21528945
• Journal Information: Physical Review. A, Vol. 82, Issue 6; Other Information: DOI: 10.1103/PhysRevA.82.063622; (c) 2010 American Institute of Physics; ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
74 ATOMIC AND MOLECULAR PHYSICS
BOSE-EINSTEIN CONDENSATION
EXCITED STATES
INTERFEROMETERS
NOISE
POTENTIALS
SENSITIVITY
SPIN
SYMMETRY
ANGULAR MOMENTUM
ENERGY LEVELS
MEASURING INSTRUMENTS
PARTICLE PROPERTIES