36 citations · 184 across the 12 of their papers we have counts for
12 papers
A Multi-Qubit Quantum Gate Using the Zeno Effect
Philippe Lewalle, Leigh S. Martin, Emmanuel Flurin +5
The Zeno effect, in which repeated observation freezes the dynamics of a quantum system, stands as an iconic oddity of quantum mechanics. When a measurement is unable to distinguis…
Pontryagin-Optimal Control of a non-Hermitian Qubit
Philippe Lewalle, K. Birgitta Whaley
Open-system quantum dynamics described by non-Hermitian effective Hamiltonians have become a subject of considerable interest. Studies of non-Hermitian physics have revealed genera…
Demonstration of universal control between non-interacting qubits using the Quantum Zeno effect
Eliya Blumenthal, Chen Mor, Asaf A. Diringer +5
The Zeno effect occurs in quantum systems when a very strong measurement is applied, which can alter the dynamics in non-trivial ways. Despite being dissipative, the dynamics stay…
Stochastic Path Integral Analysis of the Continuously Monitored Quantum Harmonic Oscillator
Tathagata Karmakar, Philippe Lewalle, Andrew N. Jordan
We consider the evolution of a quantum simple harmonic oscillator in a general Gaussian state under simultaneous time-continuous weak position and momentum measurements. We deduce…
Quantum erasing the memory of Wigner's friend
Cyril Elouard, Philippe Lewalle, Sreenath K. Manikandan +3
The Wigner's friend paradox concerns one of the most puzzling problems of quantum mechanics: the consistent description of multiple nested observers. Recently, a variation of Wigne…
Entanglement-Preserving Limit Cycles from Sequential Quantum Measurements and Feedback
Philippe Lewalle, Cyril Elouard, Andrew N. Jordan
Entanglement generation and preservation is a key task in quantum information processing, and a variety of protocols exist to entangle remote qubits via measurement of their sponta…
Entanglement of a pair of quantum emitters via continuous fluorescence measurements: a tutorial
Philippe Lewalle, Cyril Elouard, Sreenath K. Manikandan +3
We discuss recent developments in measurement protocols that generate quantum entanglement between two remote qubits, focusing on the theory of joint continuous detection of their…
Diffusive entanglement generation by continuous homodyne monitoring of spontaneous emission
Philippe Lewalle, Cyril Elouard, Sreenath K. Manikandan +3
We consider protocols to generate quantum entanglement between two remote qubits, through joint time-continuous detection of their spontaneous emission. We demonstrate that schemes…
Measuring Fluorescence to Track a Quantum Emitter's State: A Theory Review
Philippe Lewalle, Sreenath K. Manikandan, Cyril Elouard +1
We review the continuous monitoring of a qubit through its spontaneous emission, at an introductory level. Contemporary experiments have been able to collect the fluorescence of an…
Gravitational sensing with weak value based optical sensors
Andrew N. Jordan, Philippe Lewalle, Jeff Tollaksen +1
Using weak values amplification angular resolution limits, we theoretically investigate the gravitational sensing of objects. By inserting a force-sensing pendulum into a weak valu…
Chaos in Continuously Monitored Quantum Systems: An Optimal Path Approach
Philippe Lewalle, John Steinmetz, Andrew N. Jordan
We predict that continuously monitored quantum dynamics can be chaotic. The optimal paths between past and future boundary conditions can diverge exponentially in time when there i…
Prediction and Characterization of Multiple Extremal Paths in Continuously Monitored Qubits
Philippe Lewalle, Areeya Chantasri, Andrew N. Jordan
We examine most-likely paths between initial and final states for diffusive quantum trajectories in continuously monitored pure-state qubits, obtained as extrema of a stochastic pa…