# Protocol for Counterfactually Transporting an Unknown Qubit

@article{Salih2016ProtocolFC, title={Protocol for Counterfactually Transporting an Unknown Qubit}, author={Hatim Salih}, journal={Frontiers in Physics}, year={2016}, volume={3} }

Quantum teleportation circumvents the uncertainty principle using dual channels: a quantum one consisting of previously-shared entanglement, and a classical one, together allowing the disembodied transport of an unknown quantum state over distance. It has recently been shown that a classical bit can be counterfactually communicated between two parties in empty space, “Alice” and “Bob”. Here, by using our “dual” version of the chained quantum Zeno effect to achieve a counterfactual CNOT gate, we…

## 48 Citations

Counterfactual quantum-information transfer without transmitting any physical particles

- PhysicsScientific reports
- 2015

Unlike the typical teleportation, the present scheme can transport an unknown qubit in a nondeterministic manner without prior entanglement sharing or classical communication between the two distant participants.

From a Quantum Paradox to Counterportation

- Physics
- 2018

We uncover a new quantum paradox, where a simple question about two identical quantum systems reveals unsettlingly paradoxical answers when weak measurements are considered. Our resolution of the…

From a Quantum Paradox to Provably Counterfactual Disembodied Transport: Counterportation

- Physics
- 2018

We uncover a new quantum paradox, where a simple question about two identical systems of nested interferometers reveals surprising answers on the whereabouts of a photon, when considering weak…

Exchange unknown quantum states with almost invisible photons.

- PhysicsOptics express
- 2019

We propose a quasi-counterfactual quantum swap gate for exchanging Alice's unknown photon state and Bob's unknown atomic state under the condition that only Alice's photon may appear in the…

From Counterportation to Local Wormholes

- Computer Science
- 2018

Surprisingly, while such communication is intuitively explained in terms of “interaction-free” measurement and the Zeno effect, it is shown that neither is necessary, with far-reaching implications in support of an underlying physical reality.

How Quantum is Quantum Counterfactual Communication?

- Physics
- 2019

Quantum Counterfactual Communication is the recently-proposed idea of using quantum physics to send messages between two parties, without any matter/energy transfer associated with the bits sent.…

Deterministic Teleportation and Universal Computation Without Particle Exchange

- Physics
- 2020

The controlled-phase universal gate is proposed, where no particles are exchanged between control and target, allows complete Bell detection among two remote parties, and is experimentally feasible.

Counterfactual Full-Duplex Communication

- Physics, Computer Science
- 2019

The quantum duplex coding and quantum telexchanging protocols are demonstrated by exploiting counterfactual electron-photon interaction gates and shown to form full-duplex binary erasure channel and quantum erasure channels, respectively.

Quantum Duplex Coding

- Computer Science, Physics
- 2019

This work devise a distributed controlled NOT (DNOT) operation to transfer information in both directions at the same time to create a new form of full-duplex communication, called quantum duplex coding, that enables communicating parties to exchange either classical or quantum messages simultaneously and counterfactually by means of nonlocal controlled entanglement and/or disentanglement of the DNOT operation.

Modification of "Counterfactual communication protocols" which makes them truly counterfactual

- Computer Science
- 2018

A simple modification of these recent protocols eliminates the trace in the transmission channel and makes all these protocols truly counterfactual.

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