Journal
PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES
Volume 370, Issue 1976, Pages 4794-4809Publisher
ROYAL SOC
DOI: 10.1098/rsta.2011.0354
Keywords
magnetic resonance; spin qubits; phase gates; geometric phase; state tomography; multi-mode memory
Categories
Funding
- EPSRC through CAESR [EP/D048559/1]
- Clarendon Fund
- KCWong Education Foundation
- Hitachi Cambridge Laboratory
- St John's College Oxford
- Royal Society
- EPSRC [EP/I035536/2, EP/H025952/2, EP/H025952/1, EP/I035536/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/I035536/2, EP/H025952/2, EP/I035536/1, EP/H025952/1] Funding Source: researchfish
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The phase of a superposition state is a quintessential characteristic that differentiates a quantum bit of information from a classical one. This phase can be manipulated dynamically or geometrically, and can be exploited to sensitively estimate Hamiltonian parameters, perform faithful quantum state tomography and encode quantum information into multiple modes of an ensemble. Here we discuss the methods that we have employed to manipulate and exploit the phase information of single-, two-, multi-qubit and multi-mode spin systems.
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