论文标题
用量子机电测试自发波力崩溃
Testing spontaneous wavefunction collapse with quantum electromechanics
论文作者
论文摘要
自发波力崩溃的理论可以解释宏观系统量子力学的可能分解。但是，解决在背景噪声上方的预测崩溃标志的挑战已排除了确定的测试。在这里，我们提议使用超导量子标筒克服这一挑战，以精确读取机械谐振器的塌陷引起的加热。我们表明，将Qubit与谐振器的强烈搭配的能力可以实现快速测量和接近其基态的量子的初始化。结合了这一点，可以极大地抑制了量子量子加热的影响，我们预计这是主要的噪声源。我们发现，由于其超低耗散，大量的声波共振可以扩增塌陷引起的加热。总之，这可以实现崩溃模型的结论性测试。
Theories of spontaneous wavefunction collapse offer an explanation of the possible breakdown of quantum mechanics for macroscopic systems. However, the challenge of resolving predicted collapse signatures above background noise has precluded conclusive tests. Here, we propose to overcome this challenge using a superconducting qubit to precisely readout the collapse-induced heating of a mechanical resonator. We show that the ability to strongly couple the qubit to the resonator can enable both fast measurements and initialization of the qubit close to its ground state. Combined this greatly suppresses the influence of quasiparticle heating of the qubit, which we predict to be the dominant noise source. We find that bulk acoustic wave resonances can amplify the collapse induced heating due to their ultra-low dissipation. Together, this could enable a conclusive test of collapse models.
