Measurement back-action on the quantum spin-mixing dynamics of a spin-1 Bose-Einstein condensate
arXiv:1104.5301 · doi:10.1103/PhysRevA.83.063624
Abstract
We consider a small F=1 spinor condensate inside an optical cavity driven by an optical probe field, and subject the output of the probe to a homodyne detection, with the goal of investigating the effect of measurement back-action on the spin dynamics of the condensate. Using the stochastic master equation approach, we show that the effect of back-action is sensitive to not only the measurement strength but also the quantum fluctuation of the spinor condensate. The same method is also used to estimate the atom numbers below which the effect of back-action becomes so prominent that extracting spin dynamics from this cavity-based detection scheme is no longer practical.
References in corpus (27)
- Spinor Bose Condensates in Optical Traps
- Optical Confinement of a Bose-Einstein Condensate
- Bose-Einstein condensation with internal degrees of freedom in alkali atom gases
- The dynamics of component separation in a binary mixture of Bose-Einstein condensates
- Quantum spins mixing in spinor Bose-Einstein condensates
- Cavity QED with a Bose-Einstein condensate
- Observation of spinor dynamics in optically trapped 87Rb Bose-Einstein Condensates
- Coherent spinor dynamics in a spin-1 Bose condensate
- Dynamics of F=2 Spinor Bose-Einstein Condensates
- Squeezing and entanglement of atomic beams
- Coherent spin mixing dynamics in a spin-1 atomic condensate
- Spinor Dynamics in an Antiferromagnetic Spin-1 Condensate
- Coherent collisional spin dynamics in optical lattices
- Quantum Phase Transitions and Continuous Observation of Spinor Dynamics in an Antiferromagnetic Condensate
- A Quantum Non-demolition measurement of Fock states of mesoscopic mechanical oscillators
- Magnetically tuned spin dynamics resonance
- Evolution of a spinor condensate: coherent dynamics, dephasing and revivals
- Cavity-Mediated Strong Matter Wave Bistability in a Spin-1 Condensate
- Continous Measurement of the Energy Eigenstates of a Nanomechanical Resonator without a Non-Demolition Probe
- Multi-stability in an optomechanical system with two-component Bose-Einstein condensate
- Continuous quantum measurement of a Bose-Einstein condensate: a stochastic Gross-Pitaevskii equation
- Spin dynamics and domain formation of a spinor Bose-Einstein condensate in an optical cavity
- Quantum-Fluctuation-Driven Coherent Spin Dynamics in Small Condensates
- Measurement-induced Squeezing of a Bose-Einstein Condensate
- Dynamics of decoherence in continuous atom-optical quantum nondemolition measurements
- Probing the quantum ground state of a spin-1 Bose-Einstein condensate with cavity transmission spectra
- Influence of the particle number on the spin dynamics of ultracold atoms