Measurement-enhanced determination of BEC phase transitions
arXiv:1607.02934 · doi:10.1088/1361-6455/aad447
Abstract
We demonstrate how dispersive atom number measurements during evaporative cooling can be used for enhanced determination of the parameter dependence of the transition to a Bose-Einstein condensate (BEC). In this way shot-to-shot fluctuations in initial conditions are detected and the information extracted per experimental realization is increased. We furthermore calibrate in-situ images from dispersive probing of a BEC with corresponding absorption images in time-of-flight. This allows for the determination of the transition point in a single experimental realization by applying multiple dispersive measurements. Finally, we explore the continuous probing of several consecutive phase transition crossings using the periodic addition of a focused "dimple" potential.
arXiv comment9 pages, 7 figures; M. G. Bason and R. Heck contributed equally to this work
References in corpus (39)
- Quantum Simulation
- Artificial gauge potentials for neutral atoms
- Quantum Non-Markovianity: Characterization, Quantification and Detection
- Engineered 2D Ising interactions on a trapped-ion quantum simulator with hundreds of spins
- Quantum Simulation of Antiferromagnetic Spin Chains in an Optical Lattice
- Experimental realization of a long-range antiferromagnet in the Hubbard model with ultracold atoms
- Quantum simulation of frustrated magnetism in triangular optical lattices
- Mesoscopic atomic entanglement for precision measurements beyond the standard quantum limit
- States of an Ensemble of Two-Level Atoms with Reduced Quantum Uncertainty
- Collisions of matter-wave solitons
- Spontaneous creation of Kibble-Zurek solitons in a Bose-Einstein condensate
- Suppression of the critical temperature for superfluidity near the Mott transition: validating a quantum simulator
- Reversible Formation of a Bose-Einstein Condensate
- Spin squeezing of a cold atomic ensemble with the nuclear spin of one-half
- Adiabatically changing the phase-space density of a trapped Bose gas
- Observation of deviations from ideal gas thermodynamics in a trapped Bose-Einstein condensed gas
- Observing the Formation of Long-range Order during Bose-Einstein Condensation
- Analytical description of a trapped semi-ideal Bose gas at finite temperature
- Parametric amplification of vacuum fluctuations in a spinor condensate
- Non-destructive Faraday imaging of dynamically controlled ultracold atoms
- Quantum Measurement-induced Dynamics of Many-Body Ultracold Bosonic and Fermionic Systems in Optical Lattices
- Internal energy and condensate fraction of a trapped interacting Bose gas
- Preparation of ultracold atom clouds at the shot noise level
- Non-destructive, dynamic detectors for Bose-Einstein condensates
- Optimized production of large Bose Einstein Condensates
- Quantum polarization spectroscopy of ultracold spinor gases
- Squeezing and entanglement of density oscillations in a Bose-Einstein condensate
- Theory of single-shot phase contrast imaging in spinor Bose-Einstein condensates
- Controlling spontaneous-emission noise in measurement-based feedback cooling of a Bose-Einstein Condensate
- Feedback control of an interacting Bose-Einstein condensate using phase-contrast imaging
- Many-body state engineering using measurements and fixed unitary dynamics
- Growth dynamics of a Bose-Einstein condensate in a dimple trap without cooling
- Quantum control of spin-correlations in ultracold lattice gases
- Non-destructive shadowgraph imaging of ultracold atoms
- Characterization of Bose-Hubbard Models with Quantum Non-demolition Measurements
- Microscopic theory of a phase transition in a critical region: Bose-Einstein condensation in an interacting gas
- Reducing number fluctuations of ultracold atomic gases via dispersive interrogation
- Kinetics of Bose-Einstein condensation in a dimple potential
- In-situ magnetometry for experiments with atomic quantum gases
Cited by in corpus (9)
- Remote optimization of an ultra-cold atoms experiment by experts and citizen scientists
- Feedback-Induced Quantum Phase Transitions Using Weak Measurements
- Criticality-enhanced quantum sensing in ferromagnetic Bose-Einstein condensates: role of readout measurement and detection noise
- Spatially-selective in situ magnetometry of ultracold atomic clouds
- Spatial tomography of individual atoms in a quantum gas microscope
- Deterministic quantum state transfer of atoms in a random magnetic field
- The Harmonic Oscillator Potential Perturbed by a Combination of Linear and Non-linear Dirac Delta Interactions with Application to Bose-Einstein Condensation
- Single-shot determination of quantum phases via continuous measurements
- Light scattering from an atomic gas under conditions of quantum degeneracy