Nanoscale Magnetic Resonance Spectroscopy Using a Carbon Nanotube Double Quantum Dot

Song, W. H.; Du, Tianyi; Liu, Hai Bin; Plenio, Martin B.; Cai, Jianming

doi:10.1103/physrevapplied.12.054025

Cited by 6 publications

(3 citation statements)

References 60 publications

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“…the biphenyl-4-thiol molecule [33], the meso-tetrakis(3,5-di-tertiarybutylphenyl)-porphyrin (H2TBPP) molecule [24], the polyvinyl acetate molecule [27], and the Atto647 molecule [26]. Here, we also state that we believe that this single chemical molecule can also be substituted equivalently by the quantum dot molecule or other quantum units [26,[61][62][63]. For this vibrating molecule, its fundamental frequncy is assumed to be ω c ∼ 2π × 10 3 GHz, which is much larger than the fundamental frequency of the traditional mechanical resonator, and its effective ence rate satisfies γ c ∼ 0.01 − 1 meV, since under sufficiently cold environmental surroundings its average phonon number is nc = 1/(e hωc/kBT − 1) ≪ 1.…”

Section: Experimental Discussionmentioning

confidence: 80%

Molecule–plasmon–photon hybridization and applications

Lü¹,

Badshah²,

Li³

et al. 2023

J. Phys. D: Appl. Phys.

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We study a potential hybrid quantum system with a plasmonic nanocavity coupled to a vibrating mode of single molecule and another optical cavity mode. To explore some important and valuable applications in quantum physics, we discuss and estimate several different applications with respect to the plasmon-mediated quantum interface, the plasmon-assisted engineering of two-mode continuous-variable entanglement, and pursuing an indirect and ultrastrong molecule-photon cooperativity. In addition, governed by the relation of symmetry breaking and quantum phase transitions (QPTs), the single-molecule induced QPTs is also studied in this tripartite hybrid quantum system. This theoretical study can strongly support the potential applications of this hybrid system in the field of quantum information processing (QIP). It is believed that our investigation on molecule-plasmon-photon hybridization can not only open a new avenue towards quantum manipulations, but also provide a fresh and reliable platform to carry out many applications with high efficiencies.

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Section: Experimental Discussionmentioning

confidence: 80%

Molecule–plasmon–photon hybridization and applications

Lü¹,

Badshah²,

Li³

et al. 2023

J. Phys. D: Appl. Phys.

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“…19], superconducting circuits [20,21], and optomechanical or magnetomechanical systems [22][23][24][25][26]; thirdly, the system initialization, information readout and control methods are convenient and feasible for carrying out such type of sensing target [27]; finally, these available systems above may provide much more hybrid schemes in potential [27], which can surely exhibit a superiority beyond the traditional optical interferometry technology [13,14]. It will be a promising topic to introduce quantum platforms and objects to characterize some physical quantities, no matter which belong to the classical or quantum quantities [28][29][30].…”

Section: Introductionmentioning

confidence: 99%

Hybrid magnon-photon system for sensing weak phase

Han,

Tian,

Cheng

et al. 2024

J. Phys. B: At. Mol. Opt. Phys.

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It belongs to a hot topic to sense or detect the weak and even ultra-weak physical quantities by utilizing quantum platforms and methods. We here propose a hybrid magnon-photon system of the yttrium iron garnet (YIG) magnon mode coupled to a microwave cavity, which also includes another degree of freedom with respect to the thermal vibration of this YIG microsphere. In this quasi-tripartite coupling system, we generalize the condition for satisfying energy degeneracy and anti-crossing behaviors. Especially around the zero-energy area, we can get the joint quantum eﬀects of anti-crossing behavior and degeneracy of systemic energy, and then reach a signiﬁcantly enhanced sensitivity to this phase disturbance. Therefore our proposal can characterize this weak vibration through a phase disturbance and indicate a group of clearly resolvable output spectra. This investigation may be considered as an encouraging attempt on sensing weak quantity by engineering the systemic energy into the critical area for further enlarging its sensitivity to the weak disturbance.

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“…Microwave spectroscopy has also been performed for the investigation of charge qubits, 6,7 as well as other hybrid spin systems. [8][9][10] Charge localization in quantum dot systems can be controlled with AC fields, [11][12][13] while various important parameters of the spin and/or charge dynamics can be extracted from AC induced interference patterns. [14][15][16][17] In this work, we study the current through a double dot (DD) for two different cases of the AC electric field; in the first case the AC field modulates the interdot tunnel coupling of the DD, and in the second case the AC field modulates the energy detuning of the DD.…”

Section: Introductionmentioning

confidence: 99%

Microwave spectroscopy of spin–orbit coupled states: Energy detuning vs interdot coupling modulation

Giavaras

Tokura

2020

Journal of Applied Physics

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We study the AC field induced current peaks of a spin blockaded double quantum dot with spin-orbit interaction. The AC field modulates either the interdot tunnel coupling or the energy detuning, and we choose the AC field frequency range to induce two singlet-triplet transitions giving rise to two current peaks. We show that for a large detuning the two current peaks can be significantly stronger when the AC field modulates the tunnel coupling, thus making the detection of the spin-orbit gap more efficient. We also demonstrate the importance of the time dependence of the spin-orbit interaction.

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Nanoscale Magnetic Resonance Spectroscopy Using a Carbon Nanotube Double Quantum Dot

Cited by 6 publications

References 60 publications

Molecule–plasmon–photon hybridization and applications

Molecule–plasmon–photon hybridization and applications

Hybrid magnon-photon system for sensing weak phase

Microwave spectroscopy of spin–orbit coupled states: Energy detuning vs interdot coupling modulation

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