92 citations · 134 across the 7 of their papers we have counts for
7 papers
Stability, Gain, and Robustness in Quantum Feedback Networks
C. D'Helon, M. R. James
This paper concerns the problem of stability for quantum feedback networks. We demonstrate in the context of quantum optics how stability of quantum feedback networks can be guaran…
Constant-time solution to the Global Optimization Problem using Bruschweiler's ensemble search algorithm
V. Protopopescu, C. D'Helon, J. Barhen
A constant-time solution of the continuous Global Optimization Problem (GOP) is obtained by using an ensemble algorithm. We show that under certain assumptions, the solution can be…
Targeting qubit states using open-loop control
C. D'Helon, V. Protopopescu, R. Perez
We present an open-loop (bang-bang) scheme which drives an open two-level quantum system to any target state, while maintaining quantum coherence throughout the process. The contro…
New summing algorithm using ensemble computing
C. D'Helon, V. Protopopescu
We propose an ensemble algorithm, which provides a new approach for evaluating and summing up a set of function samples. The proposed algorithm is not a quantum algorithm, insofar…
Robust control of decoherence in realistic one-qubit quantum gates
V. Protopopescu, R. Perez, C. D'Helon +1
We present an open loop (bang-bang) scheme to control decoherence in a generic one-qubit quantum gate and implement it in a realistic simulation. The system is consistently describ…
Quantum measurements with a quantum computer
C. D'Helon, G. J. Milburn
We present a scheme in which an ion trap quantum computer can be used to make arbitrarily accurate measurements of the quadrature phase variables for the collective vibrational mot…