SODA '91 Proceedings of the second annual ACM-SIAM symposium on Discrete algorithms
Elements of information theory
Elements of information theory
Quantum computation and quantum information
Quantum computation and quantum information
Applications of coherent classical communication and the schur transform to quantum information theory
The classical capacity achievable by a quantum channel assisted by a limited entanglement
Quantum Information & Computation
Bidirectional coherent classical communication
Quantum Information & Computation
The capacity of the quantum channel with general signal states
IEEE Transactions on Information Theory
Coding theorem and strong converse for quantum channels
IEEE Transactions on Information Theory
Entanglement-assisted capacity of a quantum channel and the reverse Shannon theorem
IEEE Transactions on Information Theory
On the capacities of bipartite Hamiltonians and unitary gates
IEEE Transactions on Information Theory
A tight lower bound on the classical communication cost of entanglement dilution
IEEE Transactions on Information Theory
The private classical capacity and quantum capacity of a quantum channel
IEEE Transactions on Information Theory
Remote preparation of quantum states
IEEE Transactions on Information Theory
Optimal Superdense Coding of Entangled States
IEEE Transactions on Information Theory
A Resource Framework for Quantum Shannon Theory
IEEE Transactions on Information Theory
Exact universality from any entangling gate without inverses
Quantum Information & Computation
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Unitary gates are interesting resources for quantum communication in part because they are always invertible and are intrinsically bidirectional. This paper explores these two symmetries: time-reversal and exchange of Alice and Bob. We will present examples of unitary gates that exhibit dramatic separations between forward and backward capacities (even when the back communication is assisted by free entanglement) and between entanglement-assisted and unassisted capacities, among many others. Along the way, we will give a general time-reversal rule for relating the capacities of a unitary gate and its inverse that will explain why previous attempts at finding asymmetric capacities failed. Finally, we will see how the ability to erase quantum information and destroy entanglement can be a valuable resource for quantum communication.