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Two entanglement conditions and their connection to negativity
Mark Hillery, Camilla Polvara, Vadim Oganesyan +1
We examine two conditions that can be used to detect bipartite entanglement, and show that they can be used to provide lower bounds on the negativity of states. We begin with two-q…
Lower bound on phase noise of classical states
Mark Hillery
An uncertainty relation for the number and phase of a single-mode field state is derived. It is then used to find a lower bound on the phase noise of a classical state. Any state t…
Optimizing Initial State of Detector Sensors in Quantum Sensor Networks
Caitao Zhan, Himanshu Gupta, Mark Hillery
In this paper, we consider a network of quantum sensors, where each sensor is a qubit detector that "fires," i.e., its state changes when an event occurs close by. The change in st…
Broadcasting single-qubit and multi-qubit-entangled states: authentication, cryptography, and distributed quantum computation
Hiroki Sukeno, Tzu-Chieh Wei, Mark Hillery +3
Quantum entanglement assisted with measurements provides various pathways to communicate information to parties within a network. In this work, we generalize a previous broadcastin…