494 citations · 5.6k across the 128 of their papers we have counts for
6 papers · 2 filters
Fault-tolerant Holonomic Quantum Computation in Surface Codes
Yi-Cong Zheng, Todd A. Brun
We show that universal holonomic quantum computation (HQC) can be achieved fault-tolerantly by adiabatically deforming the gapped stabilizer Hamiltonian of the surface code, where…
Violating the Modified Helstrom Bound with Nonprojective Measurements
Justin Dressel, Todd A. Brun, Alexander N. Korotkov
We consider the discrimination of two pure quantum states with three allowed outcomes: a correct guess, an incorrect guess, and a non-guess. To find an optimum measurement procedur…
Improving the precision of weak measurements by postselection measurement
Shengshi Pang, Todd A. Brun
Postselected weak measurement is a useful protocol for amplifying weak physical effects. However, there has recently been controversy over whether it gives any advantage in precisi…
Quantum metrology for a general Hamiltonian parameter
Shengshi Pang, Todd A. Brun
Quantum metrology enhances the sensitivity of parameter estimation using the distinctive resources of quantum mechanics such as entanglement. It has been shown that the precision o…
Continuous decomposition of quantum measurements via qubit probe feedback
Jan Florjanczyk, Todd A. Brun
It is known that any two-outcome quantum measurement can be decomposed into a continuous stochastic process using a feedback loop. In this article, we characterize which of these d…
Entanglement-assisted weak value amplification
Shengshi Pang, Justin Dressel, Todd A. Brun
Large weak values have been used to amplify the sensitivity of a linear response signal for detecting changes in a small parameter, which has also enabled a simple method for preci…