Articles tagged with Quantum Limits
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Researchers at Aalto University have successfully controlled quantum phenomena in a custom-designed electrical circuit called a transmon. They were able to make the transmon jump multiple energy levels in one go, achieving speeds close to the theoretically calculated quantum speed limit.
Researchers at the University of Bristol have discovered fundamental limits on the postselection technique used to test quantum mechanics. They found that as complex quantum systems are built, fewer and fewer entangled states can be reached using postselection alone.
Scientists have discovered that semiconducting radicals can fabricate highly efficient OLEDs by exploiting their quantum mechanical 'spin' property, overcoming limitations of traditional materials. The new technology could lead to brighter displays and lighting technologies, including blue- and green-light radical-based diodes.
Scientists have recorded a massive 1,200 tesla magnetic field generated indoors, surpassing the strength of modern MRI machines and the Earth's magnetic field by millions of times. This achievement could pave the way for new discoveries in solid-state physics and nuclear fusion research.
Researchers at Bar-Ilan University have introduced a method that overcomes the speed limit of quantum communication, enabling data transfer to increase by more than 5 orders of magnitude. This breakthrough uses direct optical nonlinearity to process quantum information in the optical regime, preserving its enormous bandwidth.
Researchers will test the quantum superposition principle (QSP) in a microscopic system, exploring its validity at larger scales. If successful, this could lead to robust quantum technology for daily applications, enabling faster data processing and transmission.
Researchers created a nanomechanical resonator that confines vibrations to a small region, boosting coherence and achieving unprecedented Q-factors. This enables new generations of quantum sensors and force microscopy, with potential applications in probing quantum limits and molecular resolution imaging.
The study reveals strong correlations between laser-induced light fluctuations and mechanical motion, showcasing the strange laws of quantum mechanics. By using a phononic crystal to confine vibrations, the researchers achieved ultra-precision measurements, overcoming fundamental quantum limits.
A new method for measuring microwave signals was developed by researchers at Aalto University, achieving the most accurate measurement with nanodrums so far. This technology enables efficient transformation of quantum information between different frequencies, potentially enabling data encryption based on quantum mechanics.
Researchers have achieved the most extreme entanglement between photon pairs, pushing quantum physics to its limit. The result bolsters confidence in schemes for quantum cryptography and computing.
Researchers at Lawrence Berkeley National Laboratory and the University of California detected a force of approximately 42 yoctonewtons using a unique optical trapping system and ultracold atoms. The detection surpassed the Standard Quantum Limit, achieving sensitivity consistent with theoretical predictions.
A new JQI photodetector uses an adaptive network of detectors with feedback to read quantum information with minimal uncertainty. By combining multiple stages and using phase reference waves, the system can beat the standard quantum limit for quaternary encoding.
Researchers at University of Toronto have demonstrated a new technique to squeeze light to the fundamental quantum limit, increasing certainty in measurement. This finding has potential applications for next-generation atomic clocks, novel quantum computing and our understanding of the universe.
The maximum transmission rate of quantum-encrypted messages is limited by detector dead times, which can compromise security. Researchers aim to reduce these times to increase speeds and enhance wireless cryptography.
Researchers discovered that quantum coherence in qubits spontaneously disappears, even without external influences. This process is linked to quantum mechanical spontaneous symmetry breaking, which could limit the development of quantum computers.
Researchers propose experiments to test quantum effects in mechanical systems, achieving sensitivity close to the quantum limit. The goal is to understand how quantum and classical physics crossover, a long-standing scientific question.