Quantum Register Based on Individual Electronic and Nuclear Spin Qubits in Diamond

  title={Quantum Register Based on Individual Electronic and Nuclear Spin Qubits in Diamond},
  author={M. V. Gurudev Dutt and Lilian I Childress and L. Jiang and Emre Togan and Jeronimo R. Maze and Fedor Jelezko and A. S. Zibrov and Philip Robert Hemmer and Mikhail D. Lukin},
  pages={1312 - 1316}
The key challenge in experimental quantum information science is to identify isolated quantum mechanical systems with long coherence times that can be manipulated and coupled together in a scalable fashion. We describe the coherent manipulation of an individual electron spin and nearby individual nuclear spins to create a controllable quantum register. Using optical and microwave radiation to control an electron spin associated with the nitrogen vacancy (NV) color center in diamond, we… 

Single spins in diamond for quantum networks and magnetic sensing

  • M. Dutt
  • Physics
    Optical Data Storage
  • 2010
Building scalable quantum information systems is a central challenge facing modern science. Single spins in diamond are a promising platform for distributed quantum information networks and precision

Nuclear spin-wave quantum register for a solid-state qubit.

Solid-state nuclear spins surrounding individual, optically addressable qubits1,2 are a crucial resource for quantum networks3-6, computation7-11 and simulation12. Although hosts with sparse nuclear

Quantum measurement and entanglement of spin quantum bits in diamond

This thesis presents a set of experiments that explore the possible realisation of a macroscopic quantum network based on solid-state quantum bits. Such a quantum network would allow for studying

Nuclear spin quantum register in an optically active semiconductor quantum dot

This work uses strain-free GaAs/AlGaAs QDs to demonstrate a fully functioning two-qubit quantum register using the nanoscale ensemble of arsenic quadrupolar nuclear spins as its hardware, and implements benchmark quantum computations such as Grover’s search and the Deutsch–Jozsa algorithm.

Universal control and error correction in multi-qubit spin registers in diamond.

This work uses the electron spin of a nitrogen-vacancy centre in diamond to selectively initialize, control and read out carbon-13 spins in the surrounding spin bath and construct high-fidelity single- and two-qubit gates.

Optical control of single excitons in semiconductor quantum dots

The fundamental building block of quantum information processing technologies is the quantum-bit a ‘qubit.’ These technologies require the ability to prepare, control, and read out a qubit state.

High-fidelity projective read-out of a solid-state spin quantum register

The preparation and measurement of a multi-spin quantum register in a low-temperature solid-state system is demonstrated by implementing resonant optical excitation techniques originally developed in atomic physics, and compatibility with qubit control is shown.

Quantum entanglement between an optical photon and a solid-state spin qubit

The reported entanglement source can be used in studies of fundamental quantum phenomena and provides a key building block for the solid-state realization of quantum optical networks.

Hybrid Solid-State Qubits: The Powerful Role of Electron Spins

We review progress on the use of electron spins to store and process quantum information, with particular focus on the ability of the electron spin to interact with multiple quantum degrees of

Coherent control of hyperfine-coupled electron and nuclear spins for quantum information processing

Coupled electron-nuclear spins are promising physical systems for quantum information processing: By combining the long coherence times of the nuclear spins with the ability to initialize, control,



Coherent Dynamics of Coupled Electron and Nuclear Spin Qubits in Diamond

Coherent manipulation of an individual electron spin associated with a nitrogen-vacancy center in diamond was used to gain insight into its local environment, which shows that this environment is effectively separated into a set of individual proximal 13Cnuclear spins, which are coupled coherently to the electron spin, and the remainder of the 13C nuclear spins, who cause the loss of coherence.

Coherent Manipulation of Coupled Electron Spins in Semiconductor Quantum Dots

We demonstrated coherent control of a quantum two-level system based on two-electron spin states in a double quantum dot, allowing state preparation, coherent manipulation, and projective readout.

Driven coherent oscillations of a single electron spin in a quantum dot

The experimental realization of single electron spin rotations in a double quantum dot is reported, demonstrating the feasibility of operating single-electron spins in a quantum dot as quantum bits.

Quantum computation using the 13C nuclear spins near the single NV defect center in diamond

We discuss the possibility of realizing quantum computation on the basis of a cluster of single interacting nuclear spins in solids. This idea seems to be feasible because of the combination of two

Quantum computing with trapped ions, atoms and light

We consider experimental issues relevant to quantum computing, and discuss the best way to achieve the essential requirements of reliable quantum memory and gate operations. Nuclear spins in trapped

Observation of entanglement between a single trapped atom and a single photon

The direct observation of entanglement between stationary and ‘flying’ qubits is accomplished without using cavity quantum electrodynamic techniques or prepared non-classical light sources and it is envisioned that this source of entangling may be used for a variety of quantum communication protocols and for seeding large-scale entangled states of trapped ion qubits for scalable quantum computing.

Observation of coherent oscillation of a single nuclear spin and realization of a two-qubit conditional quantum gate.

Density matrix tomography of the CROT gate shows that the gate fidelity achieved in the experiments is up to 0.9, good enough to be used in quantum algorithms.

Hybrid quantum repeater using bright coherent light.

A quantum repeater protocol for long-distance quantum communication that creates entanglement between qubits at intermediate stations of the channel by using a weak dispersive light-matter interaction and distributing the outgoing bright coherent-light pulses among the stations.

Anisotropic interactions of a single spin and dark-spin spectroscopy in diamond

Experiments on single nitrogen–vacancy (N–V) centres in diamond, which include electron spin resonance1, Rabi oscillations2, single-shot spin readout3 and two-qubit operations with a nearby13C

Creation of a six-atom ‘Schrödinger cat’ state

The creation of cat states of up to six atomic qubits is reported, which represents the current state-of-the-art for large entangled states in any qubit system.