Remote Entanglement by Coherent Multiplication of Concurrent Quantum Signals

Abstract

Concurrent remote entanglement of distant, non-interacting quantum entities is a crucial function for quantum information processing. In contrast with the existing protocols which employ addition of signals to generate entanglement between two remote qubits, the protocol we present is based on multiplication of signals. This protocol can be straightforwardly implemented by a novel Josephson junction mixing circuit. Our scheme would be able to generate provable entanglement even in presence of practical imperfections: finite quantum efficiency of detectors and undesired photon loss in current state-of-the-art devices.

References in corpus (3)

• Distributed Quantum Computation Based-on Small Quantum Registers
• Quantum trajectory approach to circuit QED: Quantum jumps and the Zeno effect
• Quantum back-action of variable-strength measurement

Cited by in corpus (9)

• A Schrodinger Cat Living in Two Boxes
• Chip-to-chip entanglement of transmon qubits using engineered measurement fields
• Quantum Electronic Circuit Simulation of Generalized sine-Gordon Models
• Theory of remote entanglement via quantum-limited phase-preserving amplification
• A Multi-Qubit Quantum Gate Using the Zeno Effect
• Concurrent Remote Entanglement with Quantum Error Correction
• Heralded entangled coherent states between spatially separated massive resonators
• Measurement-induced entanglement of two transmon qubits by a single photon
• CDJ-Pontryagin Optimal Control for General Continuously Monitored Quantum Systems