Robust and highly efficient discrimination of chiral molecules through three-mode parallel paths

Wu, Jin‐Lei; Wang, Yan; Song, Jie; Xia, Yan; Su, Shi‐Lei; Jiang, Yongyuan

doi:10.1103/physreva.100.043413

Cited by 44 publications

(32 citation statements)

References 64 publications

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“…Inspired by pulse shaping or modulation techniques employed extensively in recent studies [39,[58][59][60][61][62][63][64], we herein propose to use shaped time-dependent coupling g(t) to replace the constant g, which is designed as g(t) = g m sin 2 (αt), with g m and α being maximum amplitude and suitable constants, respectively. Experimentally, amplitude modulation of the qubit-cavity coupling has been demonstrated in circuit QED system [65,66].…”

Section: Robustness Against Control Errors and Decoherencementioning

confidence: 99%

Noise-resistant phase gates with amplitude modulation

Wang

Han

et al. 2020

Preprint

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We propose a simple scheme for implementing fast arbitrary phase gates and employ pulse modulation to improve the gate robustness against different sources of noise. Parametric driving of a cavity is introduced to induce Rabi interactions between the cavity and qutrits, and then a two-qubit arbitrary phase gate is constructed by designing proper logical states. On this basis, we implement amplitude-shaped gates to obtain enhanced resilience to control errors in gate time and frequency detuning. By virtue of specifically designed logical states, the scheme displays intrinsic resistance to the energy relaxations of qutrits. Furthermore, we show that the gate robustness against cavity decay can be enhanced significantly with amplitude modulation.

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Section: Robustness Against Control Errors and Decoherencementioning

confidence: 99%

Noise-resistant phase gates with amplitude modulation

Wang

Han

et al. 2020

Preprint

Self Cite

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“…By taking advantage of the sign difference property of optical rotations, it has become promising to select enantiomers by designing coherent quantum optical schemes [9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26]. The concept of the adiabatic passage techniques, such as stimulated Raman adiabatic passages [27,28] and shortcuts to adiabaticity [29,30], was proposed to generate efficient and robust detection and separation of chiral molecules [31][32][33][34][35][36]. In order to meet adiabatic criteria, the adiabatic passage techniques involve strict limitations on the control fields, and therefore, the corresponding control processes are usually slow and complicated.…”

Section: Introductionmentioning

confidence: 99%

Cyclic three-level-pulse-area theorem for enantioselective state transfer of chiral molecules

Guo,

Gong,

et al. 2021

Preprint

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We derive a pulse-area theorem for a cyclic three-level system, an archetypal model for exploring enantioselective state transfer (ESST) in chiral molecules driven by three linearly polarized microwave pulses.By dividing the closed-loop excitation into two separate stages, we obtain both amplitude and phase conditions of three control fields to generate high fidelity of ESST. As a proof of principle, we apply this pulse-area theorem to the cyclohexylmethanol molecules (C 7 H 14 O), for which three rotational states are connected by the a-type, b-type, and c-type components of the transition dipole moments in both centerfrequency resonant and detuned conditions. Our results show that two enantiomers with opposite handedness can be transferred to different target states by designing three microwave pulses that satisfy the amplitude and phase conditions at the transition frequencies. The corresponding control schemes are robust against the time delays between the two stages. We suggest that the two control fields used in the second stage should be applied simultaneously for practical applications. This work contributes an alternative pulse-area theorem to the field of quantum control, which has the potential to determine the chirality of enantiomers in a mixture.

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“…For example, initially introduced by Kral and Shapiro [4] and experimentally demonstrated by Patterson [5], three-wave mixing has become one of the most prominent techniques that can selectively populate a specific state in only one of the enantiomers. This selectivity serves as a solid foundation for plenty of detection and separation protocols [6][7][8][9][10][11][12][13][14]. Alternative chiroptical techniques are based on light induced forces [15][16][17][18], selective dimer formation [19] and dynamic Stark shift [20].…”

Section: Introductionmentioning

confidence: 99%

Chiral resolution based on laser-induced continuum structure

Zlatanov,

Vitanov

2021

Preprint

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In this paper we propose a chiral resolution technique based on laser-induced continuum structure (LICS). We show that the two enantiomers can have a different ionization profile based on implemented LICS excitation. We treat a cyclic excitation between two bound states and a continuum state and show how asymmetric ionization can be achieved based on different trapping of the enantiomers due to the additional coupling between the bound states. Alternatively, when multiple states are involved in the interaction we investigate a multilevel LICS strategy of asymmetric ionization based on dark-bright state trapping. In this latter case one of the enantiomers is trapped in a dark state, which is immune to ionization, while the other is driven in a bright state, from which the population leaks into the continuum.

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Robust and highly efficient discrimination of chiral molecules through three-mode parallel paths

Cited by 44 publications

References 64 publications

Noise-resistant phase gates with amplitude modulation

Noise-resistant phase gates with amplitude modulation

Cyclic three-level-pulse-area theorem for enantioselective state transfer of chiral molecules

Chiral resolution based on laser-induced continuum structure

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