The primary resource for quantum computation is Hilbert-space
dimension. Whereas Hilbert space itself is an abstract construction,
the number of dimensions available to a system is a physical quantity
that requires physical resources. Avoiding a demand for an
exponential amount of these resources places a fundamental constraint
on the systems that are suitable for scalable quantum computation.
To be scalable, the number of degrees of freedom in the computer must
grow nearly linearly with the number of qubits in an equivalent
qubit-based quantum computer.
Conference Committee Involvement (2)
Fluctuations and Noise in Photonics and Quantum Optics II
26 May 2004 | Maspalomas, Gran Canaria Island, Spain
Fluctuations and Noise in Photonics and Quantum Optics
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