منابع مشابه
Reliable quantum computers
The new field of quantum error correction has developed spectacularly since its origin less than two years ago. Encoded quantum information can be protected from errors that arise due to uncontrolled interactions with the environment. Recovery from errors can work effectively even if occasional mistakes occur during the recovery procedure. Furthermore, encoded quantum information can be process...
متن کاملA Practical Architecture for Reliable Quantum Computers
Q uantum computers offer the prospect of computation that scales exponentially with data size. Unfortunately, a single bit error can corrupt an exponential amount of data. Quantum mechanics can seem more suited to science fiction than system engineering, yet small quantum devices of 5 to 7 bits have nevertheless been built in the laboratory, 100-bit devices are on the drawing table now, and eme...
متن کاملQuantum Computers
We analyse dissipation in quantum computation and its destructive impact on eeciency of quantum algorithms. We discuss relations between decoherence and computational complexity and show that quantum factorisation algorithm must be modiied in order to be regarded as eecient and realistic. Our model od decoherence is quite general and incorporates reservoirs with a large coherence length.
متن کاملQuantum Computers
This research paper gives an overview of quantum computers – description of their operation, differences between quantum and silicon computers, major construction problems of a quantum computer and many other basic aspects. No special scientific knowledge is necessary for the reader. Introduction to Quantum Computers Around 2030 computers might not have any transistors and chips. Think of a com...
متن کاملQuantum computers and quantum coherence
If the states of spins in solids can be created, manipulated, and measured at the single-quantum level, an entirely new form of information processing, quantum computing, will be possible. We "rst give an overview of quantum information processing, showing that the famous Shor speedup of integer factoring is just one of a host of important applications for qubits, including cryptography, counte...
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ژورنال
عنوان ژورنال: Proceedings of the Royal Society of London. Series A: Mathematical, Physical and Engineering Sciences
سال: 1998
ISSN: 1364-5021,1471-2946
DOI: 10.1098/rspa.1998.0167