We introduce a new decomposition of the multiqubit states of the form $\rho^{\otimes N}$ and employ it to construct the optimal single qubit purification procedure. The same decomposition allows us to study optimal quantum cloning and state estimation of mixed states
The cloning of conjugate continuous quantum variables is analyzed based on the concept of Gaussian c...
In classical control theory, tracking refers to the ability to perform measurements and feedback on ...
accepted for oral presentationWe establish the ultimate limits to the compression of sequences of id...
We introduce a new decomposition of the multiqubit states of the form purification procedure. The sa...
We propose a quantum algorithm for the purification of a generic mixed state rho of a n-qudit system...
In this project, quantum cloning machines are analyzed that take in N quantum systems in the same un...
We derive a tight upper bound for the fidelity of a universal N → M qubit cloner, valid for any M ≥ ...
Optimal quantum cloning is the process of making one or more copies of an arbitrary unknown input qu...
We obtain the optimal scheme for estimating unknown qubit mixed states when an arbitrary number N of...
Quantum state elimination measurements tell us what states a quantum system does not have. This is d...
"In the framework of collective measurements, efforts have been made to reconstruct onequbit states....
We derive analytical formula for the optimal trade-off between the mean estimation fidelity and the ...
The impossibility of undoing a mixing process is analysed in the context of quantum information the...
For every possible spectrum of 2(N)-dimensional density operators, we construct an N-qubit X-state o...
We propose and investigate a method to optimize recurrence entanglement purification protocols. The ...
The cloning of conjugate continuous quantum variables is analyzed based on the concept of Gaussian c...
In classical control theory, tracking refers to the ability to perform measurements and feedback on ...
accepted for oral presentationWe establish the ultimate limits to the compression of sequences of id...
We introduce a new decomposition of the multiqubit states of the form purification procedure. The sa...
We propose a quantum algorithm for the purification of a generic mixed state rho of a n-qudit system...
In this project, quantum cloning machines are analyzed that take in N quantum systems in the same un...
We derive a tight upper bound for the fidelity of a universal N → M qubit cloner, valid for any M ≥ ...
Optimal quantum cloning is the process of making one or more copies of an arbitrary unknown input qu...
We obtain the optimal scheme for estimating unknown qubit mixed states when an arbitrary number N of...
Quantum state elimination measurements tell us what states a quantum system does not have. This is d...
"In the framework of collective measurements, efforts have been made to reconstruct onequbit states....
We derive analytical formula for the optimal trade-off between the mean estimation fidelity and the ...
The impossibility of undoing a mixing process is analysed in the context of quantum information the...
For every possible spectrum of 2(N)-dimensional density operators, we construct an N-qubit X-state o...
We propose and investigate a method to optimize recurrence entanglement purification protocols. The ...
The cloning of conjugate continuous quantum variables is analyzed based on the concept of Gaussian c...
In classical control theory, tracking refers to the ability to perform measurements and feedback on ...
accepted for oral presentationWe establish the ultimate limits to the compression of sequences of id...
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