Lifeboat Foundation

The demonstration of a device that can triple the number of photons in a microwave signal is a key step toward making a single-microwave-photon detector.

The ability to detect a single microwave photon’s worth of energy remains beyond the capability of any tool in the photonics toolbox. Detectors for one photon’s worth of energy at other photon wavelengths mostly identify the energy via the electrical signals that the photons induce after they hit the detector and are converted into electrons. However, the energies of microwave photons are too low for this process to work effectively. Fortunately, superconducting circuits provide a platform for turning one microwave photon into many, making such photons easier to detect. In a joint effort, researchers at Grenoble Alpes University in France and at the University of Sherbrooke in Canada have now demonstrated a device that can multiply the photons in a weak microwave signal [1]. The demonstration provides a key first step in creating a single-microwave-photon detector.

While detectors for optical photons have existed for decades, scientists only started developing detectors for microwave photons in the past 15 years. The wish list for an effective microwave-photon detector is daunting: it should respond to traveling photons, and not only those localized in space [2– 5]; it should have sufficient sensitivity to register a signal from a single photon [6]; it should be able to count how many photons are in a signal [7]; it should not register so-called dark counts, hits recorded when the microwave source is off; and finally, its lag time between detections should be as short as possible. One proposed way to achieve these goals is to build a microwave-photon detector using the photon-number multiplier that Romain Albert and colleagues have now demonstrated [1, 8].

American astronauts aren’t heading back to the moon just yet. NASA’s pricey Artemis mission is facing technical challenges. The space agency is now working with both SpaceX and Blue Origin.

CAPE CANAVERAL, Florida, March 3 (Reuters) — A SpaceX rocket safely lifted off from Florida on Sunday night carrying a crew of three U.S. astronauts and a Russian cosmonaut on their way to the International Space Station (ISS) to begin a six-month science mission in Earth orbit.

The two-stage Falcon 9 rocket topped with an autonomously operated Crew Dragon capsule dubbed Endeavor was launched from NASA’s Kennedy Space Center at Cape Canaveral, along Florida’s Atlantic coast, at 10:53 p.m. EST (0353 GMT Monday).

A live NASA-SpaceX webcast showed the 25-story-tall rocketship ascending from the launch tower as its nine Merlin engines roared to life in billowing clouds of vapor and a reddish fireball that lit up the night sky. The rocket consumes 700,000 gallons of fuel per second during launch, according to SpaceX.

SpaceX’s next Starship to fly has passed a critical fueling test, setting the stage for a highly anticipated third launch attempt of the world’s biggest rocket.

The gleaming, stainless-steel Starship rocket and its Super Heavy booster, which together stand 400 feet tall (122 meters), were filled with more than 10 million pounds of liquid methane and liquid oxygen propellant during the recent launch dress rehearsal, which was performed at SpaceX’s Starbase facility near Boca Chica Beach in southern Texas.

SpaceX has set plenty of spaceflight records in its 22-year history, and in the coming weeks, one of its boosters is expected to set another one.

Some of the 43 contested acres are landlocked with no public access but with protected plant and animal species. Although SpaceX is proposing swapping the public land for 477 acres, it has not yet purchased that property. None of the land in the deal has beach access, but the 43 acres sit near protected federal land and lagoons that stretch along the coast.

“Through this transaction we are guaranteeing the conservation of 477 acres, which would otherwise potentially be developed into condominiums or strip centers,” Jeffery D. Hildebrand, the Texas Parks and Wildlife Commission chairman appointed by Gov. Greg Abbott, said at the meeting’s close.

The deal started in 2019 as a conversation between the state and SpaceX. But it was finally worked out in 2023, said David Yoskowitz, the Texas Parks and Wildlife Department’s executive director.

Rotating detonation engines developed by NASA and others could spark a rocketry revolution.

By Steven Ashley

Pre-orders for a “flying car” have soared in recent months leading industry experts to question how close we are to small passenger vehicle flight. Alef Aeronautics, a company backed by Space-X, specialising in the production of flying cars, has achieved 2,850 pre-orders for its electric vertical take-off and landing (eVTOL) vehicle. The firm is backed by Tesla investor and venture capitalist Tim Draper, which has helped draw attention. Based in San Mateo, California, Alef Aeronautics is allowing customers to pre-order its two-seater flying car, the Alef Model A, online with a $150 deposit. Customers are allowed to withdraw the deposit at any time to cancel the pre-order.

The car is expected to be priced at around $300,000 when it becomes commercially available, which gives the company an order value of over $850 million to date. Jim Dukhovny, Alef’s CEO, stated: “As of today we have a little bit more than 2,850 pre-orders with deposits down, which makes it the bestselling aircraft in history, more than Boeing, Airbus, Joby Aviation and most of the eVTOLs combined.”

An exploration of the inverse of a black hole, a white hole and what that might mean for future physics.

The new JMG Clips channel for sleep!

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