Photonic quantum walks in a fiber based recursion loop

Schreiber, A.; Cassemiro, K. N.; Potocek, V.; Gabris, A.; Jex, I.; Silberhorn, Ch

doi:10.1063/1.3630170

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Photonic quantum walks in a fiber based recursion loop

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Schreiber, A.
Silberhorn Research Group, Research Groups, Max Planck Institute for the Science of Light, Max Planck Society;

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Cassemiro, K. N.
Silberhorn Research Group, Research Groups, Max Planck Institute for the Science of Light, Max Planck Society;

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Silberhorn, Ch
Silberhorn Research Group, Research Groups, Max Planck Institute for the Science of Light, Max Planck Society;

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Citation

Schreiber, A., Cassemiro, K. N., Potocek, V., Gabris, A., Jex, I., & Silberhorn, C. (2011). Photonic quantum walks in a fiber based recursion loop. In QUANTUM COMMUNICATION, MEASUREMENT AND COMPUTING (QCMC): THE TENTH INTERNATIONAL CONFERENCE. 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA: AMER INST PHYSICS.

Cite as: https://hdl.handle.net/11858/00-001M-0000-002D-6A41-0

Abstract

We present a flexible and robust system for implementing one-dimensional coined quantum walks. A recursion loop in the optical network together with a translation of the spatial into the time domain ensures the possible increment of the step number without need of additional optical elements. An intrinsic phase stability assures a high degree of coherence and hence guarantees a good scalability of the system. We performed a quantum walk over 27 steps and analyzed the 54 output modes. Furthermore, we estimated that up to 100 steps can be realized with only minor changes in the used components.