5 papers
Simple broadband signal detection at the fundamental limit
Anthony M. Polloreno, Graeme Smith
Broadband detection of a weak oscillatory field with unknown carrier frequency underlies magnetometry, axion searches and gravitational-wave sensing. We show that the Grover-like i…
Secure quantum ranging
Yunkai Wang, Graeme Smith, Alex May
Determining and verifying an object's position is a fundamental task with broad practical relevance. We propose a secure quantum ranging protocol that combines quantum ranging with…
Gaussian quantum data hiding
Yunkai Wang, Graeme Smith
Quantum data hiding encodes a hidden classical bit to a pair of quantum states that is difficult to distinguish using a particular set of measurement, denoted as . In this work,…
Information Fragility or Robustness Under Quantum Channels
Nicholas Laracuente, Graeme Smith
Quantum states naturally decay under noise. Many earlier works have quantified and demonstrated lower bounds on the decay rate, showing exponential decay in a wide variety of conte…
Entanglement distillation by extendible maps
Lukasz Pankowski, Fernando G. S. L. Brandao, Michal Horodecki +1
It is known that from entangled states that have positive partial transpose it is not possible to distill maximally entangled states by local operations and classical communication…