Nuclear Spin Memoery - FOUNDRYBLACKJACK.NETLIFY.APP

Physics. Nuclear-spin quantum memory poised to take the lead.
PDF - A Ten-Qubit Solid-State Spin Register with Quantum Memory up to.
Optimization of optical spin readout of the nitrogen... - Scitation.
Quantum repeaters based on individual electron spins and nuclear-spin.
Spin-mediated consciousness theory: possible roles of neural... - PubMed.
Expanding Spin Memory (4 of 6) | EurekAlert!.
Nuclear Spin Quantum Memory in Silicon Carbide - NASA/ADS.
Decoherence of nuclear spin quantum memory in a quantum dot.
PDF Investigation of the Coupled Electron-Nuclear Spin System in GaAs Under.
‪Carlos A. Meriles‬ - ‪Google Scholar‬.
Chaining Atoms Together Using Nuclear Spins Yields Quantum Storage.
A new method to measure quantum entanglement in a nuclear spin ensemble.
Decoherence of Nuclear Spin Quantum Memory in Quantum Dot.

Physics. Nuclear-spin quantum memory poised to take the lead.

Here, we use the NV intrinsic nuclear spin as a nonvolatile classical memory to store NMR information, while suppressing sensor back-action on the target using controlled decoupling of sensor,. In a much shorter time, the physicists read and reread the same nuclear spin data 2,000 times, showing the act of reading the spin data doesn't destroy it, making the memory reliable, Boehme says. Electronic Spin Storage in an Electrically Readable Nuclear Spin Memory with a Lifetime >100 Seconds. Science, 17 December 2010: Vol. 330 no. 6011 pp. 1652-1656 DOI: 10.1126/science.1197931.

PDF - A Ten-Qubit Solid-State Spin Register with Quantum Memory up to.

2. The neural qubit—phosphorus nuclear-spin The nucleus of every element is characterized by a half-integer spin-magnitude (I = 0, 1 2,1 ···) and for I 6= 0 an associated magnetic dipole moment which precesses around magnetic fields at the nucleus [7]. These magnetic fields arise from nuclear magnetic moments of nearby atoms/ions. Nuclei. Nuclear spins are an obvious candidate for implementing such a memory, because they tend to have extremely long spin lifetimes ( 1 - 3 ). To date, implementations of quantum logic or memory devices directly involving nuclear spins have used optical or microwave detection in systems such as the nitrogen vacancy center of diamond ( 4 - 6 ).

Optimization of optical spin readout of the nitrogen... - Scitation.

The mystery by showing that the electron-nuclear spin system retains memory of interruptions in magnetic eld sweeps. We also demonstrate a new technique to extract the Overhauser eld at every timestep in the experiment and use this data to test a phenomenological model that explains many key features of these results. Implementation of the nuclear spin memory Our two-qubit sensor exploits the four-level system formed by the m S ∈ {0, −1} subspace of the S = 1 electronic spin and the two m I ∈ {−1/2, +1/2} states. In addition to providing a resource for nuclear spin polarisation and detection, the electron spin can be exploited to perform ultrafast nuclear spin phase gates,... Joel W. Ager, S. A. Lyon, Solid-state quantum memory using the 31P nuclear spin, Nature, 10.1038/nature07295, 455, 7216, (1085-1088), (2008).

Quantum repeaters based on individual electron spins and nuclear-spin.

Further, if one can access coherently the quanta of such ensembles they can be exploited for quantum computational tasks and for the storage of quantum information in collective modes of the ensemble—a quantum memory. In semiconductor quantum dots, a single electron spin is a coherent interface to an isolated ensemble of nuclear spins. Thus, according our theory, the nuclear spin ensembles are the "mind-screen" with nuclear spins as its pixels, the neural membranes and proteins are the mind-screen and memory matrices, and the biologically available paramagnetic species such as O2 and NO are pixel-activating agents. Together, they form the neural substrates of consciousness.

Spin-mediated consciousness theory: possible roles of neural... - PubMed.

John J. L. Morton Department of Materials, Oxford University, Oxford OX1 3PH, United Kingdom Clarendon Laboratory, Department of Physics, Oxford University, Oxford OX1 3PU, United.

Expanding Spin Memory (4 of 6) | EurekAlert!.

Trying to choke off billions of losses from its nuclear power plant projects, Toshiba said on Friday that it would spin off its memory chip business and seek out a cash infusion from outside.

Nuclear Spin Quantum Memory in Silicon Carbide - NASA/ADS.

We probe dephasing mechanisms within a quantum network node consisting of a single nitrogen-vacancy center electron spin that is hyperfine coupled to surrounding C13 nuclear-spin quantum memories. Previous studies have analyzed memory dephasing caused by the stochastic electron-spin reset process, which is a component of optical internode entangling protocols. Here, we find, by using dynamical.

Decoherence of nuclear spin quantum memory in a quantum dot.

We further show that nuclear-spin polarization enables the use of well-known methods for initialization and long-time coherent storage of quantum states. The proposed nuclear-spin preparation protocol thus marks the first step towards an all-optically controlled integrated platform for quantum technology with TM defects in SiC. Even though the long coherence time of the nuclear spins makes them promising candidates for quantum memory [22, 49], entanglement purification [50, 51], and quantum nodes in quantum computing and communication, one of the main challenges is that the interactions between the electronic spin and the nuclear spin memory qubits are always on. As a. Here, S and I denote the electronic and nuclear spin operators, respectively, and A∥ (A⊥) denote the parallel (perpendicular) hyperfine coupling strength. If the elec-tronic spin state is j0i, the nuclear spin will precess at the Larmor frequency ω0 ¼ 2π ×γjB~j around the applied magnetic field B~ [see Fig. 1(b)], where γ ¼ 11 kHz=mT.

PDF Investigation of the Coupled Electron-Nuclear Spin System in GaAs Under.

The memory function formalism is used to derive a generalized golden rule expression for the spin--lattice relaxation rate 1/T/sub 1/ for /sup 3/He to paramagnetic centers embedded in or residing on surfaces in contact with the /sup 3/He.... Information on molecular structure and dynamics of solids is provided by nuclear magnetic resonance. Hyperfine coupling between the nuclear spin and the NV center's electronic spin, it can also enable much faster manipulation than traditional techniques that rely on the small gyromagnetic ratio of the nuclear spin [1,7,20,22]. Specifically, we use an optical Raman technique to flip the 14N nuclear spin from the state with m I ¼þ1 to that. "The length of spin memory we observed is more than adequate to create memories for computers," says Christoph Boehme (pronounced Boo-meh), an associate professor of physics and senior author of the new study, published Friday, Dec. 17 in the journal Science.... The new study puts together nuclear storage of data with an electrical readout.

‪Carlos A. Meriles‬ - ‪Google Scholar‬.

The study, by Dr. Dane R. McCamey at University of Utah in Salt Lake City, Utah, and colleagues was titled, "Electronic Spin Storage in an Electrically Readable Nuclear Spin Memory with a Lifetime. A system comprising a solid state lattice containing an electronic spin coupled to a nuclear spin; an optical excitation configuration which is arranged to generate first optical radiation to excite the electronic spin to emit output optical radiation without decoupling the electronic and nuclear spins; wherein the optical excitation configuration is further arranged to generate second optical. The electron spin state can be stored in the nuclear spin on a timescale that is long compared with the electron decoherence time and then coherently transferred back to the electron spin, thus demonstrating the 31P nuclear spin as a solid-state quantum memory. We have achieved transfer fidelities up to 90percent each way, which we attribute to.

Chaining Atoms Together Using Nuclear Spins Yields Quantum Storage.

Recently, an ensemble of nuclear spins in a quantum dot have been proposed as a long-lived quantum memory. A quantum state of an electron spin in the dot can be faithfully transfered into nuclear spins through controlled hyperfine coupling. Here we study the decoherence of this memory due to nuclear spin dipolar coupling and inhomogeneous hyperfine interaction during the storage period. Employing coherent microwave control, we demonstrate heralded single photon storage in the long-lived spin memory as well as a universal control over a cavity-coupled two-qubit register consisting of a SiV and a proximal ^{13}C nuclear spin with nearly second-long coherence time, laying the groundwork for implementing quantum repeaters.

A new method to measure quantum entanglement in a nuclear spin ensemble.

Rosskopf, J. Zopes, J. M. Boss, and C. L. Degen, " A quantum spectrum analyzer enhanced by a nuclear spin memory," npj Quantum Inf. 3, 33 (2017).... Single nuclear-spin signals with different colors are simulated based on the hyperfine interaction parameters predicted by the deep-learning model. (b) and (c) The measured XY-32 and XY.

Decoherence of Nuclear Spin Quantum Memory in Quantum Dot.

A requirement of the nuclear-spin-ensemble memory is for the ensemble to be initially polarized to perform the electron-nuclear state transfer with high fidelity. The polarization can be achieved via a process called dynamic nuclear spin polarization (DNSP) in which the electron acts as a probe to the nuclear spins. We further show that nuclear-spin polarization enables the use of well-known methods for initialization and long-time coherent storage of quantum states. The proposed nuclear-spin preparation protocol thus marks the first step towards an all-optically controlled integrated platform for quantum technology with TM defects in SiC. Submission history. Achieving control of phase memory relaxation times (T m) in metal ions is an important goal of molecular spintronics.Herein we provide the first evidence that nuclear-spin patterning in the ligand shell is an important handle to modulate T m in metal ions. We synthesized and studied a series of five V(IV) complexes with brominated catecholate ligands, [V(C 6 H 4−n Br n O 2) 3] 2− (n = 0, 1.