Entangled random pure states with orthogonal symmetry: exact results
نویسندگان
چکیده
منابع مشابه
Are all maximally entangled states pure?
We study if all maximally entangled states are pure through several entanglement monotones. In the bipartite case, we find that the same conditions which lead to the uniqueness of the entropy of entanglement as a measure of entanglement exclude the existence of maximally mixed entangled states. In the multipartite scenario, our conclusions allow us to generalize the idea of the monogamy of enta...
متن کاملOptimal dense coding with arbitrary pure entangled states
Dense coding [? ] is a communication protocol which, making use of entanglement shared in prior between the sender (Alice) and the receiver (Bob), can improve the classical capacity of a noiseless quantum channel. In the original protocol proposed by Bennett and Wiesner in Ref.[? ], with the assistance of a maximally entangled qubit pair, Alice can send faithfully 2 bits of classical informatio...
متن کاملTeleportation and Secret Sharing with Pure Entangled States
In recent years quantum entanglement [1] has found many exciting applications which have considerable bearing on the emerging fields of quantum information [2] and quantum computing [3]. Two such key applications are quantum teleportation [4] and quantum secret sharing [9]. Quantum teleportation involves secure transfer of an unknown qubit from one place to another and in quantum secret sharing...
متن کاملCompressively Characterizing High-Dimensional Entangled States with Complementary, Random Filtering
The resources needed to conventionally characterize a quantum system are overwhelmingly large for high-dimensional systems. This obstacle may be overcome by abandoning traditional cornerstones of quantum measurement, such as general quantum states, strong projective measurement, and assumptionfree characterization. Following this reasoning, we demonstrate an efficient technique for characterizi...
متن کاملIncomplete pure dephasing of N-qubit entangled W states
We consider qubits in a linear arrangement coupled to a bosonic field which acts as a quantum heat bath and causes decoherence. By taking the spatial separation of the qubits explicitly into account, the reduced qubit dynamics acquires an additional non-Markovian element. We investigate the exact time evolution of an entangled many-qubit W state, which for vanishing qubit separation remains rob...
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: Journal of Physics A: Mathematical and Theoretical
سال: 2010
ISSN: 1751-8113,1751-8121
DOI: 10.1088/1751-8113/43/40/405206