Interaction-Free All-Optical Switching via Quantum-Zeno Effect

Abstract

We propose a novel interaction-free scheme for all-optical switching which does not rely on the physical coupling between signal and control waves. The interaction-free nature of the scheme allows it to overcome the fundamental photon-loss limit imposed by the signal-pump coupling. The same phenomenon protects photonic-signal states from decoherence, making devices based on this scheme suitable for quantum applications. Focusing on ${\chi }^{(2)}$ waveguides, we provide device designs for traveling-wave and Fabry-Perot switches. In both designs, the performance is optimal when the signal switching is induced by coherent dynamical evolution. In contrast, when the switching is induced by a rapid dissipation channel, it is less efficient.

14 pages, 14 figures, submitted to Physical Review A

References in corpus (4)

• Quantum Computing Using Single Photons and the Zeno Effect
• Quantum Logic Operations Using Single Photons and the Zeno Effect
• All-Optical Switching Using the Quantum Zeno Effect and Two-Photon Absorption
• Interaction-free generation of entanglement

Cited by in corpus (11)

• Nonlinear and Quantum Optics with Whispering Gallery Resonators
• All-Optical Switching Demonstration using Two-Photon Absorption and the Classical Zeno Effect
• Antibunched Emission of Photon-Pairs via Quantum Zeno Blockade
• Experimental demonstration of interaction-free all-optical switching via the quantum Zeno effect
• On the qubit limit of cavity nonlinear optics
• Photonic Nonlinearities via Quantum Zeno Blockade
• Interaction-free all-optical switching at low light Intensities in a multi-atom cavity QED system
• Grover Speedup from Many Forms of the Zeno Effect
• Zeno-effect Computation: Opportunities and Challenges
• Optical switch based on dressed intracavity dark states
• Observation of Quantum Zeno blockade on Chip