Counterfactual Full-Duplex Communication

Abstract

This paper proposes two new full-duplex quantum communication protocols to exchange classical or quantum information between two remote parties simultaneously without transferring a physical particle over the quantum channel. The first protocol, called quantum duplex coding, enables to exchange of a classical bit using a preshared maximally entangled pair of qubits by means of counterfactual disentanglement. The second protocol, called quantum telexchanging, enables to exchange an arbitrary unknown qubit without using preshared entanglement by means of counterfactual entanglement and disentanglement. We demonstrate the quantum duplex coding and quantum telexchanging by exploiting counterfactual electron-photon interaction gates and show that these quantum duplex communication protocols form full-duplex binary erasure channel and quantum erasure channels, respectively.

References in corpus (16)

• Quantum entanglement
• Generation of Hyperentangled Photons Pairs
• Quantum Secure Direct Communication with Quantum Memory
• Capacities of Quantum Erasure Channels
• Counterfactual Quantum Cryptography
• Protocol for direct counterfactual quantum communication
• Sequential weak measurement
• Experimental demonstration of counterfactual quantum communication
• Protocol for Counterfactually Transporting an Unknown Qubit
• Modification of "Counterfactual communication protocols" which eliminates weak particle traces
• Tripartite Counterfactual Quantum Cryptography
• Genuine Counterfactual Communication with a Nanophotonic Processor
• State exchange with quantum side information
• One-shot quantum state exchange
• Counterfactual Concealed Telecomputation
• Uncommon information (the cost of exchanging a quantum state)