The May issue contains a collection of papers on physical and biophysical chemistry, including one on the OC.Br radical and OC.Br anion van der Waals complexes, which were characterised by photoelectron spectroscopy by Duncan Wild et al.J. R. Reimers et al. describe frequency-based quantum computers: the registers of qubits in a quantum computer may be probed and manipulated using frequency-based techniques such as NMR spectroscopy. A major challenge is to design molecules to act as these registers. The authors describe a rational molecular design by consideration of the generic spectroscopic properties required for quantum computing. Designs in which two-qubit gate times scale similarly to those for one-qubit gates are presented. The specified spectroscopic requirements are largely independent of the type of spectroscopy used (e.g. NMR or vibrational) and should allow the design of larger quantum registers than have been demonstrated currently.
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机译：5月号包含了一组有关物理和生物物理化学的论文，其中包括有关OC.Br自由基和OC.Br阴离子范德华配合物的论文，这些论文的特征是Duncan Wild等人通过光电子能谱进行了表征。 R. Reimers等。描述了基于频率的量子计算机：可以使用基于频率的技术（例如NMR光谱）来探测和操纵量子计算机中的量子位寄存器。一个主要的挑战是设计充当这些寄存器的分子。作者通过考虑量子计算所需的通用光谱特性来描述合理的分子设计。提出了两个量子位门限时间与一个量子位门限相似的设计。规定的光谱要求在很大程度上与所使用的光谱类型（例如NMR或振动光谱）无关，并且应允许设计比当前已证明更大的量子寄存器。
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