Qubit residence time measurements with a Bose-Einstein condensate

Abstract

We show that an electrostatic qubit located near a Bose-Einstein condensate trapped in a symmetric double-well potential can be used to measure the duration the qubit has spent in one of its quantum states. The stronq, medium and weak measurement regimes are analysed and a new type of Zeno effect is discussed. The analogy between the residence and the traversal (tunnelling) times is highlighted.

References in corpus (5)

• Dephasing of solid-state qubits at optimal points
• Relaxation and Zeno effect in qubit measurements
• Quantum reflection and dwell times of metastable states
• Unusual decoherence in qubit measurements with a Bose-Einstein condensate
• Relation between quantum dwell times and flux-flux correlations

Cited by in corpus (10)

• The Salecker-Wigner-Peres clock, Feynman paths, and a tunnelling time that should not exist
• Path integral approach to space-time probabilities: a theory without pitfalls but with strict rules
• Zeno effect and ergodicity in finite-time quantum measurements
• Spin measurements and control of cold atoms using spin-orbit fields
• Anomalous decoherence and absence of thermalization in a photonic many-body system
• Decoherence in a quantum harmonic oscillator monitored by a Bose-Einstein condensate
• Quantum law of rare events for systems with Bose-Einstein statistics
• How much time does a photon spend as an atomic excitation before being transmitted?
• Quantum decoherence of an anharmonic oscillator monitored by a Bose-Einstein condensate
• Three body dwell time