Research Highlights
Sitting 150 million kilometers away from the Earth, the Sun produces puzzling phenomena, like solar flares, that physicists are working to understand. One of these puzzles involves the Sun's tachocline, a belt of heat transition. Before leaving JILA to become a postdoctoral researcher at the University of California Santa Cruz, Matilsky collaborated with JILA Fellow Juri Toomre and his group at JILA to study the Sun's tachocline using computer simulations.
JILA and NIST Fellow James K. Thompson鈥檚 team of researchers have for the first time successfully combined two of the 鈥渟pookiest鈥� features of quantum mechanics to make a better quantum sensor: entanglement between atoms and delocalization of atoms.
In a new paper published in PRX Quantum, Rey and her team of researchers proposed a new method for seeing the quantum effects enabled by SU(n) symmetry in current experimental conditions, something that has been historically challenging for physicists.
Many researchers at JILA study and use superposition and entanglement of quantum systems, including JILA fellow Adam Kaufman. Previously, Kaufman and his research team focused on improving the coherence time of the strontium atoms鈥� superposition between the ground state and the 鈥渃lock鈥� state, so named because these two states form the basis for state-of-the-art atomic clocks. As reported in two new papers, researchers from this lab have extended these studies to much larger system sizes, with an atom in a superposition of hundreds of locations, and separately, demonstrating optical clock entanglement with seconds-scale coherence time.
A collaboration led by Dr. Liao and other researchers, including JILA Fellows Margaret Murnane and Henry Kapteyn, worked out a method to image and better analyze ST-OAM beams.
JILA Fellow Cindy Regal and her team, along with researchers at the National Institute of Standards and Technology (NIST), have for the first time demonstrated that they can trap single atoms using a novel miniaturized version of 鈥渙ptical tweezers鈥� 鈥� a system that grabs atoms using a laser beam as chopsticks.
More than 400 years later, scientists are in the midst of an equally-important revolution. They鈥檙e diving into a previously-hidden realm鈥攆ar wilder than anything van Leeuwenhoek, known as the 鈥渇ather of microbiology,鈥� could have imagined. Some researchers, like physicists Margaret Murnane and Henry Kapteyn, are exploring this world of even tinier things with microscopes that are many times more precise than the Dutch scientist鈥檚. Others, like Jun Ye, are using lasers to cool clouds of atoms to just a millionth of a degree above absolute zero with the goal of collecting better measurements of natural phenomena.
The process of developing a quantum computer has seen significant progress in the past 20 years. Quantum computers are designed to solve complex problems using the intricacies of quantum mechanics. These computers can also communicate with each other by using entangled photons (photons that have connected quantum states). As a result of this entanglement, quantum communication can provide a more secure form of communication, and has been seen as a promising method for the future of a more private and faster internet.
Qubits are a basic building block for quantum computers, but they鈥檙e also notoriously fragile鈥攖ricky to observe without erasing their information in the process. Now, new research from 蜜桃传媒破解版下载 and the National Institute of Standards and Technology (NIST) may be a leap forward for handling qubits with a light touch. In the study, a team of physicists demonstrated that it could read out the signals from a type of qubit called a superconducting qubit using laser light鈥攁nd without destroying the qubit at the same time.
In a new paper published in the Astrophysical Journal, Bice and Toomre have found a link between a red dwarf's convective cycles, or the heat cycles in a star鈥檚 atmosphere, and its magnetic fields, using fluid dynamics simulations.