Impact of Chlorine Substitution on Electron Spin Relaxation of a Trityl Radical

Moore, W. Michael; Huffman, Justin L.; Driesschaert, Benoît; Eaton, Gareth R.

doi:10.1007/s00723-021-01405-3

Cited by 2 publications

(2 citation statements)

References 37 publications

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“…This is in contrast with literature reports on T 1 relaxation in other polychlorinated triphenylmethyl radicals, where a combination of high‐value exponent Raman‐like relaxation and local mode relaxation was used. [ 59,78 ] The strong similarity between the three PTM radical compounds studied suggests that molecular local mode vibrations outside of the triarylmethane core, that is, those that involve the vinylenephenylenediyne bridge do not play a significant role in spin–lattice relaxation. To further investigate this issue, we carried out quantum chemical DFT calculations on both monoradicals.…”

Section: Resultsmentioning

confidence: 99%

Molecular One‐ and Two‐Qubit Systems with Very Long Coherence Times

Schäfter,

Wischnat,

Tesi

et al. 2023

Advanced Materials

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General‐purpose quantum computation and quantum simulation require multi‐qubit architectures with precisely defined, robust interqubit interactions, coupled with local addressability. This is an unsolved challenge, primarily due to scalability issues. These issues often derive from poor control over interqubit interactions. Molecular systems are promising materials for the realization of large‐scale quantum architectures, due to their high degree of positionability and the possibility to precisely tailor interqubit interactions. The simplest quantum architecture is the two‐qubit system, with which quantum gate operations can be implemented. To be viable, a two‐qubit system must possess long coherence times, the interqubit interaction must be well defined and the two qubits must also be addressable individually within the same quantum manipulation sequence. Here results are presented on the investigation of the spin dynamics of chlorinated triphenylmethyl organic radicals, in particular the perchlorotriphenylmethyl (PTM) radical, a mono‐functionalized PTM, and a biradical PTM dimer. Extraordinarily long ensemble coherence times up to 148 µs are found at all temperatures below 100 K. Two‐qubit and, importantly, individual qubit addressability in the biradical system are demonstrated. These results underline the potential of molecular materials for the development of quantum architectures.

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Section: Resultsmentioning

confidence: 99%

Molecular One‐ and Two‐Qubit Systems with Very Long Coherence Times

Schäfter,

Wischnat,

Tesi

et al. 2023

Advanced Materials

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show abstract

“…A perchlorinated trityl 99% 13 C 1 ( 13 C 1 -PTMTC) with slightly higher anisotropy (A ∥ − A ⊥ = 174 MHz, 62 G) was later reported. 18,19 Abnormal in vivo viscosity has been linked to many diseases, such as cancer. For example, a decrease of 1.1 cP has been reported in murine fibrosarcomas compared to normal tissue.…”

mentioning

confidence: 99%