Molecular dynamics of diglycine nitrate studied by phase memory relaxation time of glycine radical

Hoffmann, S. K.; Gramza, M.; Hilczer, W.

doi:10.1080/00150199508018508

Cited by 5 publications

(5 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…4 of Ref. [40], the phase coherent time increases dramatically when the temperature decreases below 10 K. So it will be much longer at millikelvin temperatures. Moreover, universal dynamic decoupling can .…”

Section: Internal Electron Spins: Entanglement Detection and Telmentioning

confidence: 85%

“…The smallest amino acid in proteins is glycine. The electron spin of a glycine radical NH + 3Ċ HCOO − has a relaxation time T 1 = 0.31 s and a phase coherent time T M = 6 µs at 4.2 K [40]. As shown in Fig.…”

Section: Internal Electron Spins: Entanglement Detection and Telmentioning

confidence: 97%

“…Recently, a mechanical decay rate as low as γ m = 2π × 9.2 Hz was realized in a similar electromechanical membrane oscillator [64], which will be even better. The electron spin decay and dephase can be both less than kHz [40,59], which is also much less than λ. Therefore, strong coupling condition is fulfilled.…”

Section: Internal Electron Spins: Entanglement Detection and Telmentioning

confidence: 99%

“…At millikelvin temperatures, a microorganism can be exposed to ultrahigh vacuum without sublimation of water ice. More importantly, the internal states of a microorganism, such as the electron spin of a glycine radical NH + 3Ċ HCOO − [40,41], can also be prepared in superposition states and entangled with its center-of-mass motion in the cryogenic environment. This will be remarkably similar to Schrödinger's initial thought experiment of entangling the state of an entire organism ("alive" or "dead" state of a cat) with the state of a microscopic particle (a radioactive atom).…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Quantum superposition, entanglement, and state teleportation of a microorganism on an electromechanical oscillator

Yin

2016

Science Bulletin

123

View full text Add to dashboard Cite

Schrödinger's thought experiment to prepare a cat in a superposition of both alive and dead states reveals profound consequences of quantum mechanics and has attracted enormous interests. Here we propose a straightforward method to create quantum superposition states of a living microorganism by putting a small cryopreserved bacterium on top of an electromechanical oscillator. Our proposal is based on recent developments that the center-of-mass oscillation of a 15-µm-diameter aluminium membrane has been cooled to its quantum ground state [Nature 475: 359 (2011)], and entangled with a microwave field [Science 342: 710 (2013)]. A microorganism with a mass much smaller than the mass of the electromechanical membrane will not significantly affect the quality factor of the membrane and can be cooled to the quantum ground state together with the membrane. Quantum superposition and teleportation of its center-of-mass motion state can be realized with the help of superconducting microwave circuits. More importantly, the internal states of a microorganism, such as the electron spin of a glycine radical, can be entangled with its center-of-mass motion and teleported to a remote microorganism. Our proposal can be realized with state-of-art technologies. The proposed setup is a quantum-limited magnetic resonance force microscope. Since internal states of an organism contain information, our proposal also provides a scheme for teleporting information or memories between two remote organisms.

show abstract

Section: Internal Electron Spins: Entanglement Detection and Telmentioning

confidence: 85%

Section: Internal Electron Spins: Entanglement Detection and Telmentioning

confidence: 97%

Section: Internal Electron Spins: Entanglement Detection and Telmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Quantum superposition, entanglement, and state teleportation of a microorganism on an electromechanical oscillator

Yin

2016

Science Bulletin

123

View full text Add to dashboard Cite

show abstract

“…Radicals are routinely produced during metabolism or by radiation damage. The electron spin of a glycine radical NH + 3 ĊHCOO − has a relaxation time T 1 = 0.31 s and a phase coherent time T M = 6 µs at 4.2 K [110]. The phase coherent time increases when the temperature decreases.…”

Section: Internal States Of a Microorganismmentioning

confidence: 99%

Bringing quantum mechanics to life: from Schrödinger’s cat to Schrödinger’s microbe

Yin

2017

Contemporary Physics

View full text Add to dashboard Cite

The question whether quantum mechanics is complete and the nature of the transition between quantum mechanics and classical mechanics have intrigued physicists for decades. There have been many experimental breakthroughs in creating larger and larger quantum superposition and entangled states since Erwin Schrödinger proposed his famous thought experiment of putting a cat in a superposition of both alive and dead states in 1935. Remarkably, recent developments in quantum optomechanics and electromechanics may lead to the realization of quantum superposition of living microbes soon. Recent evidence also suggests that quantum coherence may play an important role in several biological processes. In this review, we first give a brief introduction to basic concepts in quantum mechanics and the Schrödinger's cat thought experiment. We then review developments in creating quantum superposition and entangled states and the realization of quantum teleportation. Non-trivial quantum effects in photosynthetic light harvesting and avian magnetoreception are also discussed. At last, we review recent proposals to realize quantum superposition, entanglement and state teleportation of microorganisms, such as viruses and bacteria.

show abstract

Relaxation Times of Organic Radicals and Transition Metal Ions

Eaton

2002

Distance Measurements in Biological Systems by EPR

152

165

View full text Add to dashboard Cite

Abstract:Review of electron spin relaxation times for organic radicals and transition metal ions in magnetically dilute samples. Emphasis is placed on studies that have been performed as a function of temperature and that provide insight into the relaxation processes. INTRODUCTION Scope of this ChapterMost of the methods for determining distances between spins (ch.l) are either experimentally feasible or theoretically applicable for a limited range of electron spin relaxation times. For example, analysis of the dipolar contribution to the CW line shape to determine interspin distance requires that the relaxation rate for the interacting partner is slow enough that the dipolar splitting is not collapsed by electron spin relaxation. In addition, analysis of the line shapes assumes that spectra are obtained under nonsaturating conditions and are free from passage effects. Application of methods based on changes in relaxation times requires that the relaxation rate of the interacting partner fall within certain limits. The longest distance that can be obtained by pulsed techniques is limited, in principle, by the relaxation-determined width of an individual spin packet. Thus, knowledge of electron spin relaxation times is foundational to the methodologies presented in this book.

show abstract

Molecular dynamics of diglycine nitrate studied by phase memory relaxation time of glycine radical

Cited by 5 publications

References 14 publications

Quantum superposition, entanglement, and state teleportation of a microorganism on an electromechanical oscillator

Quantum superposition, entanglement, and state teleportation of a microorganism on an electromechanical oscillator

Bringing quantum mechanics to life: from Schrödinger’s cat to Schrödinger’s microbe

Relaxation Times of Organic Radicals and Transition Metal Ions

Contact Info

Product

Resources

About