Weak-Measurement-Induced Heating in Bose-Einstein Condensates
arXiv:2212.03431 · doi:10.1103/PhysRevResearch.5.023185
Abstract
Ultracold atoms are an ideal platform for understanding system-reservoir dynamics of many-body systems. Here, we study quantum back-action in atomic Bose-Einstein condensates, weakly interacting with a far-from resonant, i.e., dispersively interacting, probe laser beam. The light scattered by the atoms can be considered as a part of quantum measurement process whereby the change in the system state derives from measurement back-action. We experimentally quantify the resulting back-action in terms of the deposited energy. We model the interaction of the system and environment with a generalized measurement process, leading to a Markovian reservoir. Further, we identify two systematic sources of heating and loss: a stray optical lattice and probe-induced light assisted collisions (an intrinsic atomic process). The observed heating and loss rates are larger for blue detuning than for red detuning, where they are oscillatory functions of detuning with increased loss at molecular resonances and reduced loss between molecular resonances.
arXiv comment13 pages, 8 figures. arXiv admin note: text overlap with arXiv:2209.04400
References in corpus (36)
- Theory of Bose-Einstein condensation in trapped gases
- Quantum Error Correction for Quantum Memories
- Spontaneous symmetry breaking in a quenched ferromagnetic spinor Bose condensate
- Probing Topological Spin Liquids on a Programmable Quantum Simulator
- Watching dark solitons decay into vortex rings in a Bose-Einstein condensate
- Implementation of Cavity Squeezing of a Collective Atomic Spin
- Dynamical purification phase transitions induced by quantum measurements
- Atom-interferometric test of the equivalence principle at the level
- Deterministic entanglement of superconducting qubits by parity measurement and feedback
- Observation of measurement-induced quantum phases in a trapped-ion quantum computer
- Deterministic Squeezed States with Joint Measurements and Feedback
- Direct, Non-Destructive Imaging of Magnetization in a Spin-1 Bose Gas
- Strong saturation absorption imaging of dense clouds of ultracold atoms
- Reduced back-action for phase sensitivity 10 times beyond the standard quantum limit
- Repeated multi-qubit readout and feedback with a mixed-species trapped-ion register
- High efficiency symmetric beam splitter for cold atoms with a standing wave light pulse sequence
- Precision Measurement of Transition Matrix Elements via Light Shift Cancellation
- Experimental demonstration of continuous quantum error correction
- Direct laser cooling to Bose-Einstein condensation in a dipole trap
- Quantum feedback with weak measurements
- Non-destructive Faraday imaging of dynamically controlled ultracold atoms
- Dynamics and interaction of vortex lines in an elongated Bose-Einstein condensate
- Feedback-Induced Quantum Phase Transitions Using Weak Measurements
- Quantum Measurement-induced Dynamics of Many-Body Ultracold Bosonic and Fermionic Systems in Optical Lattices
- Preparation of ultracold atom clouds at the shot noise level
- Controlling spontaneous-emission noise in measurement-based feedback cooling of a Bose-Einstein Condensate
- Feedback-cooling of an atomic spin ensemble
- Quantum and Classical Dynamics of a BEC in a Large-Period Optical Lattice
- Continuous feedback on a quantum gas coupled to an optical cavity
- Continuous real-time tracking of a quantum phase below the standard quantum limit
- Time-delayed feedback control of the Dicke-Hepp-Lieb superradiant quantum phase transition
- Quantum measurement-induced antiferromagnetic order and density modulations in ultracold Fermi gases in optical lattices
- Analysis and calibration of absorptive images of Bose-Einstein condensate at non-zero temperatures
- Feedback-stabilized dynamical steady states in the Bose-Hubbard model
- Quantum Back-action Limits in Dispersively Measured Bose-Einstein Condensates
- Direct Calibration of Laser Intensity via Ramsey Interferometry for Cold Atom Imaging