DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Spin squeezing with itinerant dipoles: A case for shallow lattices

Journal Article · · Physical Review Research

Entangled spin squeezed states generated via dipolar interactions in lattice models provide unique opportunities for quantum enhanced sensing and are now within reach of current experiments. A critical question in this context is which parameter regimes offer the best prospects under realistic conditions. Light scattering in deep lattices can induce significant decoherence and strong Stark shifts, while shallow lattices face motional decoherence as a fundamental obstacle. Here we analyze the interplay between motion and spin squeezing in itinerant fermionic dipoles in one dimensional chains using exact matrix product state simulations. We demonstrate that shallow lattices can achieve more than 5 dB of squeezing, outperforming deep lattices by up to more than 3 dB, even in the presence of low filling, loss, and decoherence. We relate this finding to SU(2)-symmetric superexchange interactions, which keep spins aligned and protect collective correlations. We show that the optimal regime is achieved for small repulsive off-site interactions, with a trade-off between maximal squeezing and optimal squeezing time. Published by the American Physical Society 2024

Sponsoring Organization:
USDOE
OSTI ID:
2290438
Journal Information:
Physical Review Research, Journal Name: Physical Review Research Vol. 6 Journal Issue: 1; ISSN 2643-1564
Publisher:
American Physical SocietyCopyright Statement
Country of Publication:
United States
Language:
English

References (93)

Magnetic Sensitivity Beyond the Projection Noise Limit by Spin Squeezing journal December 2012
Anisotropic Polarizability of Ultracold Polar K 40 Rb 87 Molecules journal December 2012
Engineering spin squeezing in a 3D optical lattice with interacting spin-orbit-coupled fermions journal November 2019
Ultracold Dense Samples of Dipolar RbCs Molecules in the Rovibrational and Hyperfine Ground State journal November 2014
Forming a Single Molecule by Magnetoassociation in an Optical Tweezer journal June 2020
Extending Rotational Coherence of Interacting Polar Molecules in a Spin-Decoupled Magic Trap journal December 2018
Molecule–molecule and atom–molecule collisions with ultracold RbCs molecules journal December 2021
Many-body physics with ultracold gases journal July 2008
Quench Dynamics of a Fermi Gas with Strong Nonlocal Interactions journal May 2021
Ultracold Gas of Bosonic Na23K39 Ground-State Molecules journal August 2020
Accelerating many-body entanglement generation by dipolar interactions in the Bose-Hubbard model journal January 2023
Accuracy of quantum simulators with ultracold dipolar molecules: A quantitative comparison between continuum and lattice descriptions journal March 2023
Observation of dipolar spin-exchange interactions with lattice-confined polar molecules journal September 2013
Dipolar spin-exchange and entanglement between molecules in an optical tweezer array journal December 2023
Many-particle entanglement with Bose–Einstein condensates journal January 2001
Synchronization transition in dipole-coupled two-level systems with positional disorder journal November 2017
Ultracold Gas of Dipolar NaCs Ground State Molecules journal March 2023
Dipolar physics: a review of experiments with magnetic quantum gases journal December 2022
Tunable itinerant spin dynamics with polar molecules journal February 2023
Dynamics of ultracold quantum gases in the dissipative Fermi–Hubbard model journal September 2018
Quantum spin squeezing journal December 2011
Ultracold Sticky Collisions: Theoretical and Experimental Status journal January 2023
Condensed Matter Theory of Dipolar Quantum Gases journal April 2012
Spin Squeezing by Rydberg Dressing in an Array of Atomic Ensembles journal August 2023
A High Phase-Space-Density Gas of Polar Molecules journal October 2008
Seconds-Scale Coherence on Nuclear Spin Transitions of Ultracold Polar Molecules in 3D Optical Lattices journal June 2022
Feshbach resonances in ultracold atomic and molecular collisions: threshold behaviour and suppression of poles in scattering lengths journal May 2007
Quantum magnetism with polar alkali-metal dimers journal September 2011
Measurement noise 100 times lower than the quantum-projection limit using entangled atoms journal January 2016
Open-system tensor networks and Kramers' crossover for quantum transport journal May 2020
Resonant collisional shielding of reactive molecules using electric fields journal December 2020
Entanglement on an optical atomic-clock transition journal December 2020
Squeezed atomic states and projection noise in spectroscopy journal July 1994
Universalities in ultracold reactions of alkali-metal polar molecules journal December 2011
Universal Rate Constants for Reactive Collisions of Ultracold Molecules journal March 2010
Near-Unitary Spin Squeezing in Yb 171 journal June 2019
Evaporation of microwave-shielded polar molecules to quantum degeneracy journal July 2022
New frontiers for quantum gases of polar molecules journal December 2016
Probing site-resolved correlations in a spin system of ultracold molecules journal February 2023
Many-body physics with individually controlled Rydberg atoms journal January 2020
Spin squeezing of 1011 atoms by prediction and retrodiction measurements journal May 2020
Scalable spin squeezing in a dipolar Rydberg atom array journal August 2023
Creation of a low-entropy quantum gas of polar molecules in an optical lattice journal November 2015
Julia: A Fresh Approach to Numerical Computing journal January 2017
Deterministic Squeezed States with Collective Measurements and Feedback journal March 2016
Bimolecular Chemistry in the Ultracold Regime journal April 2022
Spin squeezing and reduced quantum noise in spectroscopy journal December 1992
Scalable Spin Squeezing for Quantum-Enhanced Magnetometry with Bose-Einstein Condensates journal September 2014
Out-of-equilibrium quantum magnetism and thermalization in a spin-3 many-body dipolar lattice system journal April 2019
Quantum-enhanced sensing on optical transitions through finite-range interactions journal August 2023
The density-matrix renormalization group in the age of matrix product states journal January 2011
Suppressing the Loss of Ultracold Molecules Via the Continuous Quantum Zeno Effect journal February 2014
Microscopic derivation of multichannel Hubbard models for ultracold nonreactive molecules in an optical lattice journal April 2017
Reduced spin measurement back-action for a phase sensitivity ten times beyond the standard quantum limit journal July 2014
Strongly Dipolar Bose-Einstein Condensate of Dysprosium journal October 2011
Dynamical Generation of Spin Squeezing in Ultracold Dipolar Molecules journal March 2021
Controlling dipolar exchange interactions in a dense three-dimensional array of large-spin fermions journal April 2020
Infinite time-evolving block decimation algorithm beyond unitary evolution journal October 2008
Bell correlations in a Bose-Einstein condensate journal April 2016
Measuring Correlations from the Collective Spin Fluctuations of a Large Ensemble of Lattice-Trapped Dipolar Spin-3 Atoms journal July 2022
Tunable Superfluidity and Quantum Magnetism with Ultracold Polar Molecules journal September 2011
Higher-order methods for simulations on quantum computers journal September 1999
Simulation methods for open quantum many-body systems journal March 2021
Quantum spin dynamics and entanglement generation with hundreds of trapped ions journal June 2016
Quantum metrology with nonclassical states of atomic ensembles journal September 2018
Spin-nematic squeezed vacuum in a quantum gas journal February 2012
Rotational Coherence Times of Polar Molecules in Optical Tweezers journal September 2021
An optical tweezer array of ultracold molecules journal September 2019
Dynamics of an itinerant spin-3 atomic dipolar gas in an optical lattice journal September 2019
One- and Two-Axis Squeezing via Laser Coupling in an Atomic Fermi-Hubbard Model journal August 2022
Probing spin dynamics from the Mott insulating to the superfluid regime in a dipolar lattice gas journal February 2016
Effective operator formalism for open quantum systems journal March 2012
Improvement of an Atomic Clock using Squeezed Vacuum journal September 2016
The ITensor Software Library for Tensor Network Calculations journal August 2022
Unified model of ultracold molecular collisions journal September 2020
Dissipation-induced hard-core boson gas in an optical lattice journal January 2009
Extended Bose-Hubbard models with ultracold magnetic atoms journal April 2016
Controlling the quantum stereodynamics of ultracold bimolecular reactions journal March 2011
Collisional cooling of ultracold molecules journal April 2020
Quantum simulation and computing with Rydberg-interacting qubits journal May 2021
Realizing spin squeezing with Rydberg interactions in an optical clock journal August 2023
Microwave Engineering of Programmable XXZ Hamiltonians in Arrays of Rydberg Atoms journal April 2022
A degenerate Fermi gas of polar molecules journal January 2019
Electron scattering on magnetic impurities in metals and anomalous resistivity effects journal September 1965
Quantum-enhanced sensing using non-classical spin states of a highly magnetic atom journal November 2018
Toward a coherent ultracold chemistry journal March 2022
Cold molecules: Progress in quantum engineering of chemistry and quantum matter journal September 2017
Comparing bipartite entropy growth in open-system matrix-product simulation methods journal July 2023
On-demand entanglement of molecules in a reconfigurable optical tweezer array journal December 2023
Bose-Einstein Condensation of Erbium journal May 2012
Tunable-spin-model generation with spin-orbit-coupled fermions in optical lattices journal February 2021
Spin Squeezing with Short-Range Spin-Exchange Interactions journal November 2020
Mesoscopic atomic entanglement for precision measurements beyond the standard quantum limit journal June 2009