Nuclear Spin Squeezing Based on Spin-Exchange Collisions

Abstract

Isolation from environment leads to the days-long lifetime of noble-gas nuclear spins, but also brings great challenges to the preparation, manipulation, and measurement of nuclear-spin quantum states. Here we find that nuclear spin squeezing, with ultra-long lifetime and huge atomic number, can be efficiently obtained and manipulated based on the coherent spin-exchange interaction between alkali-metal and noble-gas ensembles. Thanks to the considerable advantage of our proposal in preparing the spin squeezing of the macroscopic atomic ensemble with a huge atomic number, even the nuclear spin-squeezed state containing 10^20 atoms or more is obtainable with preexisting techniques. Further, the days-long storage and measurement of nuclear spin squeezing can be performed by the coherent manipulation of a magnetic field. This proposal can be implemented in hot atomic ensembles, whose ease of access and high adaptability to various environments will significantly facilitate the research and application of nuclear-spin nonclassical states in precision measurement, quantum information, and fundamental physics.

11 pages, 7 figures

References in corpus (29)

• Entanglement detection
• Search for New Physics with Atoms and Molecules
• Quantum interface between light and atomic ensembles
• Nonlinear atom interferometer surpasses classical precision limit
• Atom chip based generation of entanglement for quantum metrology
• Quantum spin squeezing
• Nuclear spin gyroscope based on an atomic co-magnetometer
• Electric Dipole Moments of the Atoms, Molecules, Nuclei and Particles
• Magnetic sensitivity beyond the projection noise limit by spin squeezing
• Spin squeezing inequalities and entanglement of $N$ qubit states
• Spin squeezing of atomic ensembles via nuclear-electronic spin entanglement
• Measurements with prediction and retrodiction on the collective spin of 10^{11} atoms beat the standard quantum limit
• Optically Polarized ${}^3$He
• Spin squeezing of a cold atomic ensemble with the nuclear spin of one-half
• Improved Limits on Spin-Mass Interactions
• Can a quantum nondemolition measurement improve the sensitivity of an atomic magnetometer?
• Spin squeezing: transforming one-axis-twisting into two-axis-twisting
• Quantum Control of the Hyperfine Spin of a Cs Atom Ensemble
• Generation of a squeezed state of an oscillator by stroboscopic back-action-evading measurement
• Measurement-induced nonlocal entanglement in a hot, strongly-interacting atomic system
• Strong coupling of alkali spins to noble-gas spins with hour-long coherence time
• Room-temperature single-photon source with near-millisecond built-in memory
• Long-lived entanglement generation of nuclear spins using coherent light
• Non-symmetric entanglement of atomic ensembles
• Quantum interface for noble-gas spins based on spin-exchange collisions
• Long-lived quantum memory with nuclear atomic spins
• Nuclear spin squeezing in Helium-3 by continuous quantum nondemolition measurement
• Extreme Spin Squeezing from Deep Reinforcement Learning
• Optical quantum memory for noble-gas spins based on spin-exchange collisions