A Minimum-Disturbing Quantum State Discriminator
نویسندگان
چکیده
منابع مشابه
A Minimum-Disturbing Quantum State Discriminator
We propose two experimental schemes for quantum state discrimination that achieve the optimal tradeoff between the probability of correct identification and the disturbance on the quantum state.
متن کاملStructure of minimum-error quantum state discrimination
Distinguishing different quantum states is a fundamental task having practical applications in information processing. Despite the effort devoted so far, however, strategies for optimal discrimination are known only for specific examples. In this paper we consider the problem of minimum-error quantum state discrimination where one attempts to minimize the average error. We show the general stru...
متن کاملWhat is Possible Without Disturbing Quantum Signals?
Consider a situation in which a quantum system is secretly prepared in a state chosen from the known set of n states. We show that the fundamental properties of classical and quantum signals lead to a principle that gives a definite distinction between the operations that preserve the states of the system and those that do not. Many types of no-cloning and no-imprinting conditions can easily be...
متن کاملUniversal programmable quantum state discriminator that is optimal for unambiguously distinguishing between unknown states.
We construct a device that can unambiguously discriminate between two unknown quantum states. The unknown states are provided as inputs, or programs, for the program registers, and a third system, which is guaranteed to be prepared in one of the states stored in the program registers, is fed into the data register of the device. The device will then, with some probability of success, tell us wh...
متن کاملA pr 2 00 5 A universal programmable quantum state discriminator that is optimal for unambiguously distinguishing between unknown states
We construct a device that can unambiguously discriminate between two unknown quantum states. The unknown states are provided as inputs, or programs, for the program registers and a third system, which is guaranteed to be prepared in one of the states stored in the program registers, is fed into the data register of the device. The device will then, with some probability of success, tell us whe...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Open Systems & Information Dynamics
سال: 2007
ISSN: 1230-1612,1793-7191
DOI: 10.1007/s11080-007-9033-7