Spin squeezing in a spin-orbit coupled Bose-Einstein condensate

Abstract

We study the spin squeezing in a spin-1/2 Bose-Einstein condensates (BEC) with Raman induced spin-orbit coupling (SOC). Under the condition of two-photon resonance and weak Raman coupling strength, the system possesses two degenerate ground states, using which we construct an effective two-mode model. The Hamiltonian of the two-mode model takes the form of the one-axis-twisting Hamiltonian which is known to generate spin squeezing. More importantly, we show that the SOC provides a convenient control knob to adjust the spin nonlinearity responsible for spin squeezing. Specifically, the spin nonlinearity strength can be tuned to be comparable to the two-body density-density interaction, hence is much larger than the intrinsic spin-dependent interaction strength in conventional two-component BEC systems such as ${}^{87}$Rb and ${}^{23}$Na in the absence of the SOC. We confirm the spin squeezing by carrying out a fully beyond-mean-field numerical calculation using the truncated Wigner method. Additionally, the experimental implementation is also discussed.

8 pages, 4 figures

References in corpus (38)

• A spin-orbit coupled Bose-Einstein condensate
• Quantum metrology with nonclassical states of atomic ensembles
• Atom Interferometers
• Light-induced gauge fields for ultracold atoms
• Spin-orbit coupling in quantum gases
• Spinor Bose-Einstein condensates
• Many-particle entanglement with Bose--Einstein condensates
• Nonlinear atom interferometer surpasses classical precision limit
• Atom chip based generation of entanglement for quantum metrology
• Quantum spin squeezing
• Squeezing and entanglement in a Bose-Einstein condensate
• Degenerate Quantum Gases with Spin-Orbit Coupling
• Observation of the supersolid stripe phase in spin-orbit coupled Bose-Einstein condensates
• Dynamics and statistical mechanics of ultra-cold Bose gases using c-field techniques
• Quantum tri-criticality and phase transitions in spin-orbit coupled Bose-Einstein condensates
• A Quantum-Enhanced Prototype Gravitational-Wave Detector
• Spin-Nematic Squeezed Vacuum in a Quantum Gas
• Superstripes and the excitation spectrum of a spin-orbit-coupled Bose-Einstein condensate
• Itinerant magnetism in spin-orbit coupled Bose gases
• Coherent control of spin squeezing
• Spin-orbital-angular-momentum coupled Bose-Einstein condensates
• Non-adiabacity and large flucutations in a many particle Landau Zener problem
• The Raman dressed spin-1 spin-orbit coupled quantum gas
• Observation of quantum phase transition in spin-orbital-angular-momentum coupled Bose-Einstein condensate
• Tricriticalities and Quantum Phases in Spin-Orbit-Coupled Spin-$1$ Bose Gases
• Spin - orbital-angular-momentum coupling in Bose-Einstein condensates
• Interacting spin-orbit-coupled spin-1 Bose-Einstein condensates
• Angular spin-orbit coupling in cold atoms
• Quantum phases of Bose-Einstein condensates with synthetic spin - orbital-angular-momentum coupling
• Phase transitions and elementary excitations in spin-1 Bose gases with Raman-induced spin-orbit coupling
• Experimental realization of a superfluid stripe phase in a spin-orbit-coupled Bose-Einstein condensate enabled by momentum-space hopping
• Spin-orbit-angular-momentum coupling in a spin-1 Bose-Einstein condensate
• Rotating atomic quantum gases with light-induced azimuthal gauge potentials and the observation of Hess-Fairbank effect
• Striped Ferronematic ground states in a spin-orbit coupled $S=1$ Bose gas
• Momentum-Space Josephson Effects
• Half-skyrmion and meron pair in spinor condensates
• Angular Stripe Phase in Spin-Orbital-Angular-Momentum Coupled Bose Condensates
• Harmonically Trapped Atoms with Spin-Orbit Coupling

Cited by in corpus (8)

• Optimal Generators for Quantum Sensing
• Dynamical preparation of stripe states in spin-orbit coupled gases
• Generation of spin squeezing via a fully quantum degenerate parametric amplifier
• Beyond one-axis twisting: Simultaneous spin-momentum squeezing
• Sinusoidal magnetic field induced topological excitations in a spin-orbit coupled spinor condensate
• Quantum sensing with ultracold simulators in lattice and ensemble systems: a review
• Imaginary spin-orbital coupling in parity-time symmetric systems with momentum-dependent gain and loss
• Enhanced strong interaction effect in synthetic spin-orbit coupling with mixed spin symmetry