IBM Quantum’s Post

We’re excited to share some upcoming innovations and roadmap updates needed to realize fully error-corrected quantum computing at scale. https://ibm.co/4etLCtg On the pathway to realizing full-scale quantum computing is developing couplers that run gates across multiple quantum chips. This year at the first-ever IBM Quantum Developer Conference (QDC), we reported the results of two kinds of couplers: l-couplers, which connect chips with cables, and m-couplers, which seam together adjacent chips. First is a proof-of-concept for l-couplers we’ve named IBM Quantum Flamingo, which connects two Heron r2 chips with 4 connectors measuring up to a meter long. The next is an m-coupler proof-of-concept called IBM Quantum Crossbill. This concept connects three Herons with 548 couplers and 8 interchip m-coupler connections. At the moment, we’ve benchmarked the best CNOTs with errors per gates of 3.5%, while state transfer takes around 235 nanoseconds on average, on Flamingo. We expect these metrics to improve, and hope to debut a production-ready Flamingo chip for use by our clients at our 2025 quantum state-of-the-union. We will soon begin development on c-couplers, or couplers that link distant qubits on the same chip, with hopes for demonstrating this in 2026. These innovations are necessary to for us to implement scalable quantum computing, as well as the error correction code we shared earlier this year (https://ibm.co/4ezbrrE). This code has the potential to store quantum information with a fraction of the overhead associated with other leading error-correcting codes, but needs higher qubit connectivity between multiple chips to reach its potential—which we're also demonstrating today. We are excited at the prospect of the proof-of-concept innovations we’ve unveiled at this year’s QDC to help us get to that point. More details at the IBM Quantum blog above.

We’re excited to share some upcoming innovations and roadmap updates needed to realize fully error-corrected quantum computing at scale. https://ibm.co/4etLCtg On the pathway to realizing full-scale quantum computing is developing couplers that run gates across multiple quantum chips. This year at the first-ever IBM Quantum Developer Conference (QDC), we reported the results of two kinds of couplers: l-couplers, which connect chips with cables, and m-couplers, which seam together adjacent chips. First is a proof-of-concept for l-couplers we’ve named IBM Quantum Flamingo, which connects two Heron r2 chips with 4 connectors measuring up to a meter long. The next is an m-coupler proof-of-concept called IBM Quantum Crossbill. This concept connects three Herons with 548 couplers and 8 interchip m-coupler connections. At the moment, we’ve benchmarked the best CNOTs with errors per gates of 3.5%, while state transfer takes around 235 nanoseconds on average, on Flamingo. We expect these metrics to improve, and hope to debut a production-ready Flamingo chip for use by our clients at our 2025 quantum state-of-the-union. We will soon begin development on c-couplers, or couplers that link distant qubits on the same chip, with hopes for demonstrating this in 2026. These innovations are necessary to for us to implement scalable quantum computing, as well as the error correction code we shared earlier this year (https://ibm.co/4ezbrrE). This code has the potential to store quantum information with a fraction of the overhead associated with other leading error-correcting codes, but needs higher qubit connectivity between multiple chips to reach its potential—which we're also demonstrating today. We are excited at the prospect of the proof-of-concept innovations we’ve unveiled at this year’s QDC to help us get to that point. More details at the IBM Quantum blog above.

We’re excited to share some upcoming innovations and roadmap updates needed to realize fully error-corrected quantum computing at scale. https://ibm.co/4etLCtg On the pathway to realizing full-scale quantum computing is developing couplers that run gates across multiple quantum chips. This year at the first-ever IBM Quantum Developer Conference (QDC), we reported the results of two kinds of couplers: l-couplers, which connect chips with cables, and m-couplers, which seam together adjacent chips. First is a proof-of-concept for l-couplers we’ve named IBM Quantum Flamingo, which connects two Heron r2 chips with 4 connectors measuring up to a meter long. The next is an m-coupler proof-of-concept called IBM Quantum Crossbill. This concept connects three Herons with 548 couplers and 8 interchip m-coupler connections. At the moment, we’ve benchmarked the best CNOTs with errors per gates of 3.5%, while state transfer takes around 235 nanoseconds on average, on Flamingo. We expect these metrics to improve, and hope to debut a production-ready Flamingo chip for use by our clients at our 2025 quantum state-of-the-union. We will soon begin development on c-couplers, or couplers that link distant qubits on the same chip, with hopes for demonstrating this in 2026. These innovations are necessary to for us to implement scalable quantum computing, as well as the error correction code we shared earlier this year (https://ibm.co/4ezbrrE). This code has the potential to store quantum information with a fraction of the overhead associated with other leading error-correcting codes, but needs higher qubit connectivity between multiple chips to reach its potential—which we're also demonstrating today. We are excited at the prospect of the proof-of-concept innovations we’ve unveiled at this year’s QDC to help us get to that point. More details at the IBM Quantum blog above.

We’re excited to share some upcoming innovations and roadmap updates needed to realize fully error-corrected quantum computing at scale. https://ibm.co/4etLCtg On the pathway to realizing full-scale quantum computing is developing couplers that run gates across multiple quantum chips. This year at the first-ever IBM Quantum Developer Conference (QDC), we reported the results of two kinds of couplers: l-couplers, which connect chips with cables, and m-couplers, which seam together adjacent chips. First is a proof-of-concept for l-couplers we’ve named IBM Quantum Flamingo, which connects two Heron r2 chips with 4 connectors measuring up to a meter long. The next is an m-coupler proof-of-concept called IBM Quantum Crossbill. This concept connects three Herons with 548 couplers and 8 interchip m-coupler connections. At the moment, we’ve benchmarked the best CNOTs with errors per gates of 3.5%, while state transfer takes around 235 nanoseconds on average, on Flamingo. We expect these metrics to improve, and hope to debut a production-ready Flamingo chip for use by our clients at our 2025 quantum state-of-the-union. We will soon begin development on c-couplers, or couplers that link distant qubits on the same chip, with hopes for demonstrating this in 2026. These innovations are necessary to for us to implement scalable quantum computing, as well as the error correction code we shared earlier this year (https://ibm.co/4ezbrrE). This code has the potential to store quantum information with a fraction of the overhead associated with other leading error-correcting codes, but needs higher qubit connectivity between multiple chips to reach its potential—which we're also demonstrating today. We are excited at the prospect of the proof-of-concept innovations we’ve unveiled at this year’s QDC to help us get to that point. More details at the IBM Quantum blog above.

We’re excited to share some upcoming innovations and roadmap updates needed to realize fully error-corrected quantum computing at scale. https://ibm.co/4etLCtg On the pathway to realizing full-scale quantum computing is developing couplers that run gates across multiple quantum chips. This year at the first-ever IBM Quantum Developer Conference (QDC), we reported the results of two kinds of couplers: l-couplers, which connect chips with cables, and m-couplers, which seam together adjacent chips. First is a proof-of-concept for l-couplers we’ve named IBM Quantum Flamingo, which connects two Heron r2 chips with 4 connectors measuring up to a meter long. The next is an m-coupler proof-of-concept called IBM Quantum Crossbill. This concept connects three Herons with 548 couplers and 8 interchip m-coupler connections. At the moment, we’ve benchmarked the best CNOTs with errors per gates of 3.5%, while state transfer takes around 235 nanoseconds on average, on Flamingo. We expect these metrics to improve, and hope to debut a production-ready Flamingo chip for use by our clients at our 2025 quantum state-of-the-union. We will soon begin development on c-couplers, or couplers that link distant qubits on the same chip, with hopes for demonstrating this in 2026. These innovations are necessary to for us to implement scalable quantum computing, as well as the error correction code we shared earlier this year (https://ibm.co/4ezbrrE). This code has the potential to store quantum information with a fraction of the overhead associated with other leading error-correcting codes, but needs higher qubit connectivity between multiple chips to reach its potential—which we're also demonstrating today. We are excited at the prospect of the proof-of-concept innovations we’ve unveiled at this year’s QDC to help us get to that point. More details at the IBM Quantum blog above.