Robust sub-shot-noise measurement via Rabi-Josephson oscillations in bimodal Bose-Einstein condensates
I. Tikhonenkov, M. G. Moore, A. Vardi
DOI 10.1103/PhysRevA.83.063628 · Physical Review A
Active bibliographic source — not scientific approval
Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.
Abstract
Mach-Zehnder atom interferometry requires hold-time phase squeezing to attain readout accuracy below the standard quantum limit. This increases its sensitivity to phase diffusion, restoring shot-noise scaling of the optimal signal-to-noise ratio in the presence of interactions. The contradiction between the preparations required for readout accuracy and robustness to interactions is removed by monitoring Rabi-Josephson oscillations instead of relative-phase oscillations during signal acquisition. Optimizing the signal-to-noise ratio with a Gaussian squeezed input, we find that hold-time number squeezing satisfies both demands and that sub-shot-noise scaling is retained even for strong interactions.
Similar papers
Effect of phase noise on quantum correlations in Bose-Josephson junctions
similarity 0.91G. Ferrini et al.
Source status unknown — claims are unverified
Noise in Bose Josephson junctions: Decoherence and phase relaxation
similarity 0.89G. Ferrini et al.
Source status unknown — claims are unverified
Phase Sensitive Shot Noise in an Andreev Interferometer
similarity 0.88B. Reulet et al.
Source status unknown — claims are unverified
Macroscopic superpositions in Bose-Josephson junctions: Controlling decoherence due to atom losses
similarity 0.88K. Pawlowski et al.
Source status unknown — claims are unverified
Two-Qubit Spectroscopy of Spatiotemporally Correlated Quantum Noise in Superconducting Qubits
similarity 0.88Uwe von Lüpke et al.
Source status unknown — claims are unverified
Decoherence and entanglement in a bosonic Josephson junction: Bose-enhanced quantum Zeno control of phase diffusion
similarity 0.87Y. Khodorkovsky et al.
Source status unknown — claims are unverified