125 citations · 213 across the 9 of their papers we have counts for
9 papers
Preserving photon qubits in an unknown quantum state with Knill Dynamical Decoupling - Towards an all optical quantum memory
Manish K. Gupta, Erik J. Navarro, Todd A. Moulder +5
The implementation of polarization-based quantum communication is limited by signal loss and decoherence caused by the birefringence of a single-mode fiber. We investigate the Knil…
Improving photon detector efficiency using a high-fidelity optical CNOT gate
Katherine L Brown, Robinjeet Singh, Joshua H. Mendez Plaskus +2
A significant problem for optical quantum computing is inefficient, or inaccurate photo-detectors. It is possible to use CNOT gates to improve a detector by making a large cat stat…
Reducing the number of ancilla qubits and the gate count required for creating large controlled operations
Katherine L. Brown, Anmer Daskin, Sabre Kais +1
In this paper we show that it is possible to adapt a qudit scheme for creating a controlled-Toffoli created by Ralph et al. [Phys. Rev. A 75 011213] to be applicable to qubits. Whi…
Dynamical decoupling with tailored waveplates for long distance communication using polarization qubits
Bhaskar Roy Bardhan, Katherine L. Brown, Jonathan P. Dowling
We address the issue of dephasing effects in flying polarization qubits propagating through optical fiber by using the method of dynamical decoupling. The control pulses are implem…
Layer by layer generation of cluster states
Katherine L. Brown, Dominic Horsman, Viv Kendon +1
Cluster states can be used to perform measurement-based quantum computation. The cluster state is a useful resource, because once it has been generated only local operations and me…
Dynamical Decoupling in Optical Fibers: Preserving Polarization Qubits from Birefringent Dephasing
Bhaskar Roy Bardhan, Petr M. Anisimov, Manish K. Gupta +4
One of the major challenges in quantum computation has been to preserve the coherence of a quantum system against dephasing effects of the environment. The information stored in ph…
Ancilla-based quantum simulation
Katherine L. Brown, Suvabrata De, Vivien M. Kendon +1
We consider simulating the BCS Hamiltonian, a model of low temperature superconductivity, on a quantum computer. In particular we consider conducting the simulation on the qubus qu…
Reduce, reuse, recycle, for robust cluster state generation
Dominic Horsman, Katherine L. Brown, William J. Munro +1
Efficient generation of cluster states is crucial for engineering large-scale measurement-based quantum computers. Hybrid matter-optical systems offer a robust, scalable path to th…
Using Quantum Computers for Quantum Simulation
Katherine L Brown, William J Munro, Vivien M Kendon
Numerical simulation of quantum systems is crucial to further our understanding of natural phenomena. Many systems of key interest and importance, in areas such as superconducting…