Delta-kick Squeezing
arXiv:2103.10896 · doi:10.1103/PhysRevLett.127.183401
Abstract
We explore the possibility to overcome the standard quantum limit (SQL) in a free-fall atom interferometer using a Bose-Einstein condensate (BEC) in either of the two relevant cases of Bragg or Raman scattering light pulses. The generation of entanglement in the BEC is dramatically enhanced by amplifying the atom-atom interactions via the rapid action of an external trap focusing the matter-waves to significantly increase the atomic densities during a preparation stage -- a technique we refer to as delta-kick squeezing (DKS). The action of a second DKS operation at the end of the interferometry sequence allows to implement a non-linear readout scheme making the sub-SQL sensitivity highly robust against imperfect atom counting detection. We predict more than 30 dB of sensitivity gain beyond the SQL for the variance, assuming realistic parameters and atoms.
arXiv comment4 pages, 4 figues
References in corpus (57)
- Quantum metrology with nonclassical states of atomic ensembles
- Search for New Physics with Atoms and Molecules
- Atom Interferometers
- Many-particle entanglement with Bose--Einstein condensates
- Nonlinear atom interferometer surpasses classical precision limit
- Atom chip based generation of entanglement for quantum metrology
- Entanglement, Non-linear Dynamics, and the Heisenberg Limit
- Measuring out-of-time-order correlations and multiple quantum spectra in a trapped ion quantum magnet
- Twin matter waves for interferometry beyond the classical limit
- Quantum noise limited and entanglement-assisted magnetometry
- Interferometry with Bose-Einstein Condensates in Microgravity
- Magnetic sensitivity beyond the projection noise limit by spin squeezing
- Entanglement-Enhanced Optical Atomic Clock
- Scalable Spin Squeezing for Quantum-Enhanced Magnetometry with Bose-Einstein Condensates
- Approaching the Heisenberg limit without single-particle detection
- Mobile quantum gravity sensor with unprecedented stability
- High-accuracy inertial measurements with cold-atom sensors
- Matter wave lensing to picokelvin temperatures
- Quantum metrology with a scanning probe atom interferometer
- Quantum state magnification
- Orientation-Dependent Entanglement Lifetime in a Squeezed Atomic Clock
- Entanglement-assisted atomic clock beyond the projection noise limit
- Reduced back-action for phase sensitivity 10 times beyond the standard quantum limit
- Stability of atomic clocks based on entangled atoms
- Loschmidt Echo for quantum metrology
- Detecting large quantum Fisher information with finite measurement precision
- Why momentum width matters for atom interferometry with Bragg pulses
- 0.75 atoms improve the clock signal of 10,000 atoms
- Effective inertial frame in an atom interferometric test of the equivalence principle
- Optimal and Robust Quantum Metrology Using Interaction-Based Readouts
- ELGAR -- a European Laboratory for Gravitation and Atom-interferometric Research
- Circumventing Heisenberg's uncertainty principle in atom interferometry tests of the equivalence principle
- Atom interferometry in an optical cavity
- Improving the accuracy of atom interferometers with ultracold sources
- Spin squeezing in a bimodal condensate: spatial dynamics and particle losses
- Precision Gravity Tests and the Einstein Equivalence Principle
- All-Optical Bose-Einstein Condensates in Microgravity
- High Precision, Quantum-Enhanced Gravimetry with a Bose-Einstein Condensate
- Entanglement-based dc magnetometry with separated ions
- Momentum Entanglement for Atom Interferometry
- Rapid Cooling to Quantum Degeneracy in Dynamically Shaped Atom Traps
- Heisenberg-limited noisy atomic clock using a hybrid coherent and squeezed states protocol
- Improving cold-atom sensors with quantum entanglement: Prospects and challenges
- Squeezing on momentum states for atom interferometry
- Prospects and challenges for squeezing-enhanced optical atomic clocks
- Ramsey interferometry with generalized one-axis twisting echoes
- Phase magnification by two-axis countertwisting for detection noise robust interferometry
- Using Interaction-Based Readouts to Approach the Ultimate Limit of Detection Noise Robustness for Quantum-Enhanced Metrology in Collective Spin Systems
- Information recycling beam-splitters for atom-interferometry with enhanced sensitivity
- Non-Linear Beam Splitter in Bose-Einstein Condensate Interferometers
- Magnetometry with entangled atomic samples
- Interacting quantum mixtures for precision atom interferometry
- Universal Atom Interferometer Simulator -- Elastic Scattering Processes
- A quantum beam splitter for atoms
- Effect of interactions in the interference pattern of Bose Einstein condensates
- Rabi oscillations and Ramsey-type pulses in ultracold bosons: Role of interactions
- Non-linear Bragg trap interferometer