Cluster State Generation in a Phase-modulated Quantum Optical Frequency Comb

Author: ORCID icon
Zhu, Xuan, Physics - Graduate School of Arts and Sciences, University of Virginia
Pfister, Olivier, AS-Physics (PHYS), University of Virginia

Measurement-based quantum computing is a model of quantum computer that begins with preparing a highly entangled quantum state, known as cluster state, and is followed by performing measurements on this state to carry out the calculations. Cluster states are crucial resources for measurement-based quantum computing. Quantum optical frequency comb (QOFC), which consists of a lot of two-mode squeezed states created by an optical parametric oscillator (OPO), provides a highly scalable platform to create continuous variable (CV) cluster state, which have been generated in frequency domain, temporal domain, spatial domain and hybrid time-frequency domain. All these cluster states require interfering more than one QOFCs.

Here we propose and fully analyze the simplest technique to generate CV cluster states. We use a single QOFC and apply phase modulation to it at frequencies multiple of the comb spacing. The cluster state generated using this method can be n-hypercubic cluster state of arbitrary dimension n, among which 2 dimensional cluster states are resources for universal one-way quantum computing.

I will also present the experimental design towards the cluster states generation based on the method mentioned above. I will discuss the design for the optical phase stabilization, the homodyne and heterodyne detection that can be used to perform quadrature measurements.

PHD (Doctor of Philosophy)
Quantum optics, Cluster state, Nonlinear optics, Phase modulation
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