A practical architecture for reliable quantum computers

Oskin, Mark; Chong, Frederic T.; Chuang, Isaac L.

doi:10.1109/2.976922

Cited by 120 publications

(101 citation statements)

References 17 publications

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“…The program is aimed at developing theory, hardware, and integrated demonstrations that may include scalable assemblies of quantum logic and memory, quantum teleportation-based communication, ultra-precise clock synchronization, communication of quantum information over large distances, and network backbones based on coherent optical and quantum techniques. Under this program, the Massachusetts Institute of Technology (MIT), has proposed an architecture for a general purpose quantum computer 26 . The architecture specifies a quantum memory, qubit refresh unit to aid in maintaining the state of a specific qubit , a quantum arithmetic logic unit (ALU), code teleporters, quantum wires, and a dynamic quantum compiler/scheduler which is a classical microprocessor.…”

Section: Discussionmentioning

confidence: 99%

Introduction to Quantum Information/Computing

Costianes¹

2005

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Section: Discussionmentioning

confidence: 99%

Introduction to Quantum Information/Computing

Costianes¹

2005

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“…First, nonlocality itself is desirable; most quantum computer architectures impose spatial limitations on inter-qudit couplings. It is very inconvenient to simply accept this limitation, since fault tolerant computation requires connectivity [17]. Now one might also suggest directly swapping qudits in order to achieve the required connectivity.…”

Section: Parallelized Non-local Two-qudit Gatesmentioning

confidence: 99%

Parallelism for quantum computation with qudits

O’Leary

Brennen

Bullock³

2006

Phys. Rev. A

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Robust quantum computation with d-level quantum systems (qudits) poses two requirements: fast, parallel quantum gates and high fidelity two-qudit gates. We first describe how to implement parallel single qudit operations. It is by now well known that any single-qudit unitary can be decomposed into a sequence of Givens rotations on two-dimensional subspaces of the qudit state space. Using a coupling graph to represent physically allowed couplings between pairs of qudit states, we then show that the logical depth of the parallel gate sequence is equal to the height of an associated tree. The implementation of a given unitary can then optimize the tradeoff between gate time and resources used. These ideas are illustrated for qudits encoded in the ground hyperfine states of the atomic alkalies 87 Rb and 133 Cs. Second, we provide a protocol for implementing parallelized nonlocal two-qudit gates using the assistance of entangled qubit pairs. Because the entangled qubits can be prepared non-deterministically, this offers the possibility of high fidelity two-qudit gates.

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“…Figure 1 shows a master-slave architecture of a hybrid quantum computer based on proposals in [35] and [9] in which classical signals and processing of a classical machine (CM) are used to control the timing and sequence of quantum operations carried out in a quantum machine (QM).…”

Section: Quantum Computersmentioning

confidence: 99%

Toward Quantum Computational Agents

Klusch

2004

Agents and Computational Autonomy

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Abstract. In this chapter, we provide some first thoughts on, and preliminary answers to the question how intelligent software agents could take most advantage of the potential of quantum computation and communication, once practical quantum computers become available in foreseeable future. In particular, we discuss the question whether the adoption of quantum computational and communication means will affect the autonomy of individual and systems of agents. We show that the ability of quantum computing agents to perform certain computational tasks more efficient than classically computing agents is at the cost of limited self-autonomy, due to non-local effects of quantum entanglement.

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A practical architecture for reliable quantum computers

Abstract: Quantum computation has advanced to the point where system-level solutions can help close the gap between emerging quantum technologies and real-world computing requirements.

Cited by 120 publications

References 17 publications

Introduction to Quantum Information/Computing

Introduction to Quantum Information/Computing

Parallelism for quantum computation with qudits

Toward Quantum Computational Agents

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