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Quantum teleportation of optical quantum gates
Stephen D Bartlett1, William J Munro
1Department of Physics, Macquarie University, Sydney, New South Wales 2109, Australia.
Physical Review Letters
|April 12, 2003
Summary
Quantum computation with optics can be made fault-tolerant. A universal set of quantum gates can be teleported using entangled states and linear optics, enabling robust quantum computing strategies.
Area of Science:
- Quantum Information Science
- Quantum Optics
- Quantum Computation
Background:
- Linear optical quantum computation (LOQC) typically relies on probabilistic gate operations.
- Achieving fault-tolerant quantum computation is a major challenge in optical quantum computing.
- Existing schemes often require complex setups or are limited in scope.
Purpose of the Study:
- To demonstrate a method for teleporting a universal set of quantum gates in optical systems.
- To enable fault-tolerant quantum computation using linear optics.
- To discuss the teleportation of nondeterministic gates within LOQC.
Main Methods:
- Utilizing Einstein-Podolsky-Rosen (EPR) entangled states.
- Employing homodyne detection for measurement.
- Implementing linear optics and squeezing operations conditioned on measurement outcomes.
Main Results:
- A scheme is presented for quantum teleporting a universal set of gates.
- The proposed method is applicable to both qubit and continuous-variable optical quantum computation.
- The teleportation of nondeterministic nonlinear gates used in LOQC is theoretically discussed.
Conclusions:
- The presented scheme offers a pathway towards fault-tolerant quantum computation in optical systems.
- This approach enhances the robustness of quantum information processing using linear optics.
- The teleportation of essential quantum gates is feasible, advancing optical quantum computing.
