Quantum energy teleportation (QET) is the phenomenon in which locally inaccessible energy is activated as extractable work through collaborative local operations and classical communication (LOCC) with an entangled partner. It closely resembles the more well-known quantum information teleportation (QIT) where quantum information can be sent through an entangled pair with LOCC. It is tempting to ask how QET is related to QIT. Here we report a first study of this connection. Despite the apparent similarity, we show that these two phenomena are not only distinct but moreover are mutually competitive. We show a perturbative trade-off relation between their performance in a thermal entangled chaotic many-body system, in which both QET and QIT are simultaneously implemented through a traversable wormhole in an emergent spacetime. Motivated by this example, we study a generic setup of two entangled qudits and prove a universal non-perturbative trade-off bound. It shows that for any teleportation protocol, the overall performance of QET and QIT together is constrained by the entanglement resource. We discuss some explanations of our results.Quantum energy teleportation (QET) is the phenomenon in which locally inaccessible energy is activated as extractable work through collaborative local operations and classical communication (LOCC) with an entangled partner. It closely resembles the more well-known quantum information teleportation (QIT) where quantum information can be sent through an entangled pair with LOCC. It is tempting to ask how QET is related to QIT. Here we report a first study of this connection. Despite the apparent similarity, we show that these two phenomena are not only distinct but moreover are mutually competitive. We show a perturbative trade-off relation between their performance in a thermal entangled chaotic many-body system, in which both QET and QIT are simultaneously implemented through a traversable wormhole in an emergent spacetime. Motivated by this example, we study a generic setup of two entangled qudits and prove a universal non-perturbative trade-off bound. It shows that for any teleportation protocol, the overall performance of QET and QIT together is constrained by the entanglement resource. We discuss some explanations of our results.

arXiv:2405.13886QuantumDec 12, 202412 citations

Quantum entanglement and teleportation

F.J. Duarte

Institute of Physics eBooksOct 1, 20191 citation

Quantum Teleportation and Entanglement

Akira Furusawa, Peter van Loock

Wiley eBooksMar 11, 2011146 citations

Teleporting an unknown quantum state to a photon with prior quantum information

Tianfeng Feng, Q. Xu, Linxiang Zhou +3 more

Quantum teleportation provides a disembodied way to transfer an unknown quantum state from one quantum system to another. However, all teleportation experiments to date are limited to cases where the target quantum system contains no prior quantum information. Here we propose a scheme for teleporting a quantum state to a quantum system with prior quantum information. By using an optical qubit-ququart entangling gate, we have experimentally demonstrated the new teleportation protocol -- teleporting a qubit to a photon preloaded with one qubit of quantum information. After the teleportation, the target photon contains two qubits of quantum information, one from the teleported qubit and the other from the pre-existing qubit. The teleportation fidelities range from $0.70$ to $0.92$ , all above the classical limit of $2/3$ . Our work sheds light on a new direction for quantum teleportation and demonstrates our ability to implement entangling operations beyond two-level quantum systems.Quantum teleportation provides a disembodied way to transfer an unknown quantum state from one quantum system to another. However, all teleportation experiments to date are limited to cases where the target quantum system contains no prior quantum information. Here we propose a scheme for teleporting a quantum state to a quantum system with prior quantum information. By using an optical qubit-ququart entangling gate, we have experimentally demonstrated the new teleportation protocol -- teleporting a qubit to a photon preloaded with one qubit of quantum information. After the teleportation, the target photon contains two qubits of quantum information, one from the teleported qubit and the other from the pre-existing qubit. The teleportation fidelities range from $0.70$ to $0.92$, all above the classical limit of $2/3$. Our work sheds light on a new direction for quantum teleportation and demonstrates our ability to implement entangling operations beyond two-level quantum systems.

Sep 20, 20202 citations

Quantum entanglement and teleportation

F. J. Duarte

Institute of Physics eBooksSep 1, 20220 citations

Teleportation of accelerated information

NASSER METWALLY

A theoretical quantum teleportation protocol is suggested to teleport accelerated and nonaccelerated information over different classes of accelerated quantum channels. For the accelerated information, it is shown that the fidelity of the teleported state increases as the entanglement of the initial quantum channel increases. However, as the difference between the accelerations of the channel and the teleported state decreases, the fidelity of the teleported information increases. The fidelity of the nonaccelerated information increases as the entanglement of the initial quantum channel increases, while the accelerations of the quantum channel have a little effect. The possibility of sending quantum information over accelerated quantum channels is much better than sending classical information.A theoretical quantum teleportation protocol is suggested to teleport accelerated and nonaccelerated information over different classes of accelerated quantum channels. For the accelerated information, it is shown that the fidelity of the teleported state increases as the entanglement of the initial quantum channel increases. However, as the difference between the accelerations of the channel and the teleported state decreases, the fidelity of the teleported information increases. The fidelity of the nonaccelerated information increases as the entanglement of the initial quantum channel increases, while the accelerations of the quantum channel have a little effect. The possibility of sending quantum information over accelerated quantum channels is much better than sending classical information.

arXiv:1206.3784Journal of the Optical Society of America BDec 21, 201227 citations

0.70

0.92

, all above the classical limit of

2/3

. Our work sheds light on a new direction for quantum teleportation and demonstrates our ability to implement entangling operations beyond two-level quantum systems.