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Benchmarks of nonclassicality for qubit arrays
We present a set of practical benchmarks for N-qubit arrays that economically test the fidelity of achieving multi-qubit …
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Out-of-Time-Ordered-Correlator Quasiprobabilities Robustly Witness Scrambling
Out-of-time-ordered correlators (OTOCs) have received considerable recent attention as qualitative witnesses of information scrambling …
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Weak values from strong interactions in neutron interferometry
In their original framework weak values must be measured by weak measurements that are minimally disturbing, meaning that the coupling …
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Strengthening weak measurements of qubit out-of-time-order correlators
For systems of controllable qubits, we provide a method for experimentally obtaining a useful class of multitime correlators using …
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Quasiprobability behind the out-of-time-ordered correlator
Two topics, evolving rapidly in separate fields, were combined recently: the out-of-time-ordered correlator (OTOC) signals …
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Incoherent Qubit Control Using the Quantum Zeno Effect
The quantum Zeno effect is the suppression of Hamiltonian evolution by repeated observation, which pins the system to an eigenstate of …
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Incoherent Qubit Control Using the Quantum Zeno Effect
Arrow of Time for Continuous Quantum Measurement
We investigate the statistical arrow of time for a quantum system being monitored by a sequence of measurements. For a continuous qubit …
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Past observable dynamics of a continuously monitored qubit
Monitoring a quantum observable continuously in time produces a stochastic measurement record that noisily tracks the observable. For a …
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Linear feedback stabilization of a dispersively monitored qubit
The state of a continuously monitored qubit evolves stochastically, exhibiting competition between coherent Hamiltonian dynamics and …
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Janus sequences of quantum measurements and the arrow of time
We examine the time reversal symmetry of quantum measurement sequences by introducing a forward and backward Janus sequence of …
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