Dynamical generation of phase-squeezed states in a two-component Bose-Einstein condensates
arXiv:1011.3201 · doi:10.1103/PhysRevA.82.063622
Abstract
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)]. In this paper, we find that it can be generated dynamically with atomic Bose-Einstein condensates confined in a symmetric double well. Similar with the Berry and Wiseman's state, the prepared states show the squeezing along spin operator S_y and the anti-squeezing along S_z, leading to a sub-shot-noise of the phase sensitivity.
6.2 pages, 4 figures
References in corpus (45)
- Quantum phase transition from a superfluid to a Mott insulator in a gas of ultracold atoms
- Quantum-enhanced measurements: beating the standard quantum limit
- Quantum metrology
- Direct Observation of Tunneling and Nonlinear Self-Trapping in a single Bosonic Josephson Junction
- Atom Interferometers
- Quantum Coherent Atomic Tunneling between Two Trapped Bose-Einstein Condensates
- Multi-particle entanglement of hot trapped ions
- Many-particle entanglement with Bose--Einstein condensates
- Nonlinear atom interferometer surpasses classical precision limit
- Atom chip based generation of entanglement for quantum metrology
- Super-resolving phase measurements with a multi-photon entangled state
- Matter-wave interferometry in a double well on an atom chip
- Squeezing and entanglement in a Bose-Einstein condensate
- Direct Observation of Second Order Atom Tunnelling
- Quantum Superposition States of Bose-Einstein Condensates
- Long Phase Coherence Time and Number Squeezing of two Bose-Einstein Condensates on an Atom Chip
- States of an Ensemble of Two-Level Atoms with Reduced Quantum Uncertainty
- Optimal states and almost optimal adaptive measurements for quantum interferometry
- Many particle entanglement in two-component Bose-Einstein Condensates
- Spin squeezing and pairwise entanglement for symmetric multiqubit states
- Condensates beyond mean field theory: quantum backreaction as decoherence
- Quantum state of two trapped Bose-Einstein condensates with a Josephson coupling
- Entanglement of two-mode Bose-Einstein condensates
- Interference of Bose-Einstein Condensates on an Atom Chip
- Direct Observation of Sub-Poissonian Number Statistics in a Degenerate Bose Gas
- Preparing and probing atomic number states with an atom interferometer
- Adiabatic Mach-Zehnder Interferometry on A Quantized Bose-Josephson Junction
- Spin squeezing in a generalized one-axis twisting model
- Entanglement and sensitivity in precision measurements with states of a fluctuating number of particles
- Coherent control of spin squeezing
- Condensate splitting in an asymmetric double well for atom chip based sensors
- Extended Coherence Time with Atom-Number Squeezed Sources
- Optimal control of number squeezing in trapped Bose-Einstein condensates
- Generation of arbitrary Dicke states in spinor Bose-Einstein condensates
- Storage of spin squeezing in a two-component Bose-Einstein condensate
- Many-body protected entanglement generation in interacting spin systems
- Quantum states for Heisenberg-limited interferometry
- Direct observation of number squeezing in an optical lattice
- Spin squeezing and maximal-squeezing time
- Relationship between spin squeezing and single-particle coherence in two-component Bose-Einstein condensates with Josephson coupling
- Optimized Double-well quantum interferometry with Gaussian squeezed-states
- Non-Linear Beam Splitter in Bose-Einstein Condensate Interferometers
- States for phase estimation in quantum interferometry
- Atom-number squeezing and bipartite entanglement of two-component Bose-Einstein condensates: analytical results
- Polarization squeezing and multipartite entanglement of triphoton states