Universal and original-preserving quantum copying is impossible

被引：0

作者：

Feng, Y ^{[1
]}

Zhang, SY ^{[1
]}

Sun, XM ^{[1
]}

Ying, MS ^{[1
]}

机构：

[1] Tsing Hua Univ, Dept Comp Sci & Technol, State Key Lab Intelligent Technol & Syst, Beijing 100084, Peoples R China

来源：

PHYSICS LETTERS A | 2002年 / 297卷 / 1-2期

基金：

中国国家自然科学基金;

关键词：

D O I：

10.1016/S0375-9601(02)00388-2

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We show that an arbitrary quantum state cannot be universally 1 --> 2 copied keeping the original copy unchanged. Indeed, the density operator of the additional copy after the copying transformation is nothing but the scale product of the identity matrix with factor 1/2, which involves no information of the original state. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：1 / 3

页数：3

共 50 条

[1] Quantum Bit Retransmission Using Universal Quantum Copying Machine
Iqbal, Masab
Velasco, Luis
Ruiz, Marc
Napoli, Antonio
Pedro, Joao
Costa, Nelson
[J]. 2022 INTERNATIONAL CONFERENCE ON OPTICAL NETWORK DESIGN AND MODELLING (ONDM), 2022,
[2] Universal quantum-copying machines: a sufficient and necessary condition
Ying, MS
[J]. PHYSICS LETTERS A, 2002, 302 (01) : 1 - 7
[3] Entanglement preserving in quantum copying of three-qubit entangled state
Tong, ZY
Kuang, LM
[J]. COMMUNICATIONS IN THEORETICAL PHYSICS, 2002, 38 (05) : 541 - 546
[4] An epidemic of plagiarism: original text is best but when is copying copying?
Roberts, D. J.
[J]. TRANSFUSION MEDICINE, 2011, 21 (05) : 286 - 288
[5] PRESERVING THE POSSIBILITY OF THE IMPOSSIBLE
O'Donnell, Liam
[J]. COSMOS AND HISTORY-THE JOURNAL OF NATURAL AND SOCIAL PHILOSOPHY, 2007, 3 (01): : 215 - 225
[6] Proposal for a universal quantum copying machine in cavity QED via a dispersive interaction
Orszag, PM
González, J
Dagach, S
[J]. JOURNAL OF OPTICS B-QUANTUM AND SEMICLASSICAL OPTICS, 2005, 7 (12) : S648 - S651
[7] Quantum copying: A network
Buzek, V
Braunstein, SL
Hillery, M
Bruss, D
[J]. PHYSICAL REVIEW A, 1997, 56 (05): : 3446 - 3452
[8] Preserving universal resources for one-way quantum computing
Tanamoto, Tetsufumi
Becker, Daniel
Stojanovic, Vladimir M.
Bruder, Christoph
[J]. PHYSICAL REVIEW A, 2012, 86 (03):
[9] Copying quantum states
Maassen, Hans
Kuemmerer, Burkhard
[J]. INDIAN JOURNAL OF PURE & APPLIED MATHEMATICS, 2024, 55 (03): : 893 - 903
[10] A Hamiltonian for quantum copying
Mozyrsky, D
Privman, V
Hillery, M
[J]. PHYSICS LETTERS A, 1997, 226 (05) : 253 - 256

← 1 2 3 4 5 →