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Quantum state preparation of polar molecular ions: Towards quantum logic and spectroscopy

Michael Drewsen

Bulletin of the American Physical SocietyMar 5, 20150 citations

Quantum logic scheme for state detection of molecular ions

Shiqian Ding, Huanqian Loh, Roland Hablützel +1 more

Bulletin of the American Physical SocietyJun 4, 20140 citations

Progress towards state detection of molecular ions using quantum logic techniques

Shiqian Ding, Meng Gao, Roland Hablützel +1 more

Bulletin of the American Physical SocietyJun 5, 20130 citations

Quantum-Logic Control and High-Resolution Spectroscopy of a Single Molecular Ion

C. W. Chou

Bulletin of the American Physical SocietyMay 31, 20190 citations

Non-destructive State Detection and Spectroscopy of Single Molecules

Mudit Sinhal, Ziv Meir, Stefan Willitsch

We review our recent experimental results on the non-destructive quantum-state detection and spectroscopy of single trapped molecules. At the heart of our scheme, a single atomic ion is used to probe the state of a single molecular ion without destroying the molecule or even perturbing its quantum state. This method opens up perspectives for new research directions in precision spectroscopy, for the development of new frequency standards, for tests of fundamental physical concepts and for the precise study of chemical reactions and molecular collisions with full control over the molecular quantum state.We review our recent experimental results on the non-destructive quantum-state detection and spectroscopy of single trapped molecules. At the heart of our scheme, a single atomic ion is used to probe the state of a single molecular ion without destroying the molecule or even perturbing its quantum state. This method opens up perspectives for new research directions in precision spectroscopy, for the development of new frequency standards, for tests of fundamental physical concepts and for the precise study of chemical reactions and molecular collisions with full control over the molecular quantum state.

CHIMIA International Journal for ChemistryApr 27, 20210 citations

Scalable Quantum Logic Spectroscopy

Kaifeng Cui, Jose Valencia, Kevin T. Boyce +3 more

In quantum logic spectroscopy (QLS), one species of trapped ion is used as a sensor to detect the state of an otherwise inaccessible ion species. This extends precision measurements to a broader class of atomic and molecular systems for applications like atomic clocks and tests of fundamental physics. Here, we develop a new technique based on a Schrödinger cat interferometer to address the problem of scaling QLS to larger ion numbers. We demonstrate the basic features of this method using various combinations of ^{25}Mg^{+} logic ions and ^{27}Al^{+} spectroscopy ions. We observe higher detection efficiency by increasing the number of ^{25}Mg^{+} ions. Applied to multiple ^{27}Al^{+}, this method will improve the stability of high-accuracy optical clocks and could enable Heisenberg-limited QLS.In quantum logic spectroscopy (QLS), one species of trapped ion is used as a sensor to detect the state of an otherwise inaccessible ion species. This extends precision measurements to a broader class of atomic and molecular systems for applications like atomic clocks and tests of fundamental physics. Here, we develop a new technique based on a Schrödinger cat interferometer to address the problem of scaling QLS to larger ion numbers. We demonstrate the basic features of this method using various combinations of ^{25}Mg^{+} logic ions and ^{27}Al^{+} spectroscopy ions. We observe higher detection efficiency by increasing the number of ^{25}Mg^{+} ions. Applied to multiple ^{27}Al^{+}, this method will improve the stability of high-accuracy optical clocks and could enable Heisenberg-limited QLS.

arXiv:2207.11768Physical Review LettersNov 2, 20226 citations

Non-destructive state detection for quantum logic spectroscopy of molecular ions

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