دسته بندی:

محاسبات کوانتومی - Quantum-Computing

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سال انتشار:

2022

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عنوان انگلیسی مقاله:

General Mixed-State Quantum Data Compression With and Without Entanglement Assistance

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ترجمه فارسی عنوان مقاله:

فشرده سازی داده های کوانتومی حالت مخلوط عمومی با و بدون کمک درهم تنیدگی

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منبع:

ieee - ieee Transactions on Information Theory;2022;68;5;10:1109/TIT:2022:3143846

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نویسنده:

Zahra Baghali Khanian; Andreas Winter

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چکیده انگلیسی:

We consider the most general finite-dimensional quantum mechanical information source, which is given by a quantum system A that is correlated with a reference system R. The task is to compress A in such a way as to reproduce the joint source state ρAR at the decoder with asymptotically high fidelity. This includes Schumacher’s original quantum source coding problem of a pure state ensemble and that of a single pure entangled state, as well as general mixed state ensembles. Here, we determine the optimal compression rate (in qubits per source system) in terms of the Koashi-Imoto decomposition of the source into a classical, a quantum, and a redundant part. The same decomposition yields the optimal rate in the presence of unlimited entanglement between compressor and decoder, and indeed the full region of feasible qubit-ebit rate pairs.
keywords: Quantum information | source coding | entanglement.

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قیمت: رایگان

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توضیحات اضافی:

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