Researchers have succeeded in forming a control loop consisting of two quantum systems separated by a distance of one meter. Within this loop, one quantum system — a vibrating membrane — is cooled by the […]
We’ve all experienced the principle of feedback—for example, when we use a thermostat in conjunction with a heating system to regulate indoor temperature. The thermostat measures the current temperature, compares it with the target value […]
Quantum 6, 641 (2022). https://doi.org/10.22331/q-2022-02-02-641 Negative quantum conditional entropy states are key ingredients for information theoretic tasks such as superdense coding, state merging and one-way entanglement distillation. In this work, we ask: how does one […]
Quantum 6, 640 (2022). https://doi.org/10.22331/q-2022-02-02-640 We consider the problem of learning stabilizer states with noise in the Probably Approximately Correct (PAC) framework of Aaronson (2007) for learning quantum states. In the noiseless setting, an algorithm […]
Quantum 6, 639 (2022). https://doi.org/10.22331/q-2022-02-02-639 Landau-Zener physics is often exploited to generate quantum logic gates and to perform state initialization and readout. The quality of these operations can be degraded by noise fluctuations in the […]
February 2nd, 2022. Press Release, Ontario, TO. The Quantum Insider (TQI) today releases its latest Quantum Security report that forecasts the overall Quantum Security market will be worth approximately $10 billion by 2030, growing at […]
The Quantum Internet research team, co-led by Angela Sara Cacciapuoti and Marcello Caleffi, is looking for postdoctoral fellows willing to join the group with expertise ranging from quantum information theory through quantum information processing to […]
Quantum 6, 638 (2022). https://doi.org/10.22331/q-2022-02-02-638 Quantum systems evolving unitarily and subject to quantum measurements exhibit various types of non-equilibrium phase transitions, arising from the competition between unitary evolution and measurements. Dissipative phase transitions in steady […]
Quantum 6, 637 (2022). https://doi.org/10.22331/q-2022-02-02-637 A highly anticipated use of quantum computers is the simulation of complex quantum systems including molecules and other many-body systems. One promising method involves directly applying a linear combination of […]
Chromosomes, the bundles of DNA that star in the mitotic ballet of cell division, play a leading role in complex life. But the question of how chromosomes came to exist and evolve has long been […]
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