Quantum-Fluctuation-Driven Coherent Spin Dynamics in Small Condensates
arXiv:0806.1220 · doi:10.1103/PhysRevA.78.050701
Abstract
We have studied quantum spin dynamics of small condensates of cold sodium atoms. For a condensate initially prepared in a mean field ground state, we show that coherent spin dynamics are {\em purely} driven by quantum fluctuations of collective spin coordinates and can be tuned by quadratic Zeeman coupling and magnetization. These dynamics in small condensates can be probed in a high-finesse optical cavity where temporal behaviors of excitation spectra of a coupled condensate-photon system reveal the time evolution of populations of atoms at different hyperfine spin states.
4 pages, 3 figures
References in corpus (10)
- Spinor Bose Condensates in Optical Traps
- Spin domains in ground state spinor Bose-Einstein condensates
- Bose-Einstein condensation with internal degrees of freedom in alkali atom gases
- Quantum spins mixing in spinor Bose-Einstein condensates
- Cavity QED with a Bose-Einstein condensate
- Coherent spinor dynamics in a spin-1 Bose condensate
- Cavity QED with optically transported atoms
- Coherent spin mixing dynamics in a spin-1 atomic condensate
- Spin correlation and Discrete symmetry in Spinor Bose-Einstein Condensates
- Tunable Quantum Fluctuation-Controlled Coherent Spin Dynamics
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- Antiferromagnetic Spinor Condensates are Quantum Rotors
- From many-body oscillations to thermalization in an isolated spinor gas
- Spin fragmentation of Bose-Einstein condensates with antiferromagnetic interactions
- Precise measurements on a quantum phase transition in antiferromagnetic spinor Bose-Einstein condensates
- Quantum rotor theory of spinor condensates in tight traps
- Goldstone-mode Instability leading to Fragmentation in a Spinor Bose-Einstein Condensate
- Fluctuation-induced and symmetry-prohibited metastabilities in spinor Bose-Einstein condensates
- Coherent seeding of the dynamics of a spinor Bose-Einstein condensate: from quantum to classical behavior
- Many-body effects on second-order phase transitions in spinor Bose-Einstein condensates and breathing dynamics
- Three-body spin mixing in spin-1 Bose-Einstein condensates
- Measurement back-action on the quantum spin-mixing dynamics of a spin-1 Bose-Einstein condensate
- Quantum-Fluctuation-Driven Dynamics of Droplet Splashing, Recoiling and Deposition in Ultracold Binary Bose Gases
- Influence of the particle number on the spin dynamics of ultracold atoms
- Correlated spontaneous symmetry breaking induced by zero-point fluctuations in a quantum mixture
- Strong spin-oscillation of small spin-1 condensates caused by an inclined weak magnetic field
- Emergent quantum field theories on curved spacetimes in spinor Bose-Einstein condensates: from scalar to Proca fields