The dawning of the quantum age
It is a quarter of a century since the first quantum bits, or qubits, were hooked together to make a rudimentary quantum computer. With their ability to represent both the ones and zeros in traditional computers at the same time, qubits are the most basic components of systems that could far surpass today’s computers in […]
New techniques for accurate measurements of tiny quantum objects
New research led by a team of scientists at The Australian National University (ANU) has outlined a way to achieve more accurate measurements of microscopic objects using quantum computers—a step that could prove useful in a huge range of next-generation technologies, including biomedical sensing. Examining the various individual properties of a large everyday object […]
Programmable frequency-bin quantum states in a nano-engineered silicon device
Abstract Photonic qubits should be controllable on-chip and noise-tolerant when transmitted over optical networks for practical applications. Furthermore, qubit sources should be programmable and have high brightness to be useful for quantum algorithms and grant resilience to losses. However, widespread encoding schemes only combine at most two of these properties. Here, we overcome this hurdle […]
A new qubit approach for more stable states for quantum computers
Quantum computers can more rapidly process large amounts of data because they carry out many computation steps in parallel. The information carrier of the quantum computer is a qubit. Qubits do not only possess the information of “0” and “1,” but also values in between. However, the difficulty consists in producing qubits that are small […]
Revived photon entanglement could enhance quantum communication and imaging – Physics World
Researchers in India have shown that photon entanglement in a certain continuous-variable basis revives itself as the photons propagate away from their source. The discovery could prove useful for securely transmitting quantum information over long distances and for quantum imaging in turbulent media. Quantum entanglement between photons is being explored extensively by physicists, often to […]
Quantum superposition begs us to ask, “What is real?”
The world of the very, very small is a wonderland of strangeness. Molecules, atoms, and their constituent particles did not readily reveal their secrets to the scientists that wrestled with the physics of atoms in the early 20th century. Drama, frustration, anger, puzzlement, and nervous breakdowns abounded, and it is hard for us now, a […]
Quantum computers threaten our whole cybersecurity infrastructure: Here’s how scientists can bulletproof it
Thirteen, 53, and 433. That’s the size of quantum computers in terms of quantum bits, or qubits, which has significantly grown in the last years due to important public and private investments and initiatives. It is not only a mere question of quantity: the quality of the prepared qubits is as important as their number for a quantum computer to beat […]
Scientists See Quantum Interference between Different Kinds of Particles for First Time
For the first time, scientists have observed quantum interference—a wavelike interaction between particles related to the weird quantum phenomenon of entanglement—occurring between two different kinds of particles. The discovery could help physicists understand what goes on inside an atomic nucleus. Particles act as both particles and waves. And interference is the ability of one particle’s […]
Scientists make a quantum harmonic oscillator at room temperature
A quantum harmonic oscillator—a structure that can control the location and energy of quantum particles that could, in the future, be used to develop new technologies including OLEDs and miniature lasers—has been made at room temperature by researchers led by the University of St Andrews. The research, conducted in collaboration with scientists at Nanyang […]
The dawning of the quantum age
[et_pb_section fb_built=”1″ admin_label=”section” _builder_version=”4.16″ global_colors_info=”{}”][et_pb_row admin_label=”row” _builder_version=”4.16″ background_size=”initial” background_position=”top_left” background_repeat=”repeat” global_colors_info=”{}”][et_pb_column type=”4_4″ _builder_version=”4.16″ custom_padding=”|||” global_colors_info=”{}” custom_padding__hover=”|||”][et_pb_text admin_label=”Text” _builder_version=”4.16″ background_size=”initial” background_position=”top_left” background_repeat=”repeat” global_colors_info=”{}”] It is a quarter of a century since the first quantum bits, or qubits, were hooked together to make a rudimentary quantum computer. With their ability to represent both the ones and zeros […]
